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From self-1.md (Oct 2024 – Feb 2026)
Oblique Kick — MMA Technique The oblique kick targeting the knee: its biomechanics, controversy in MMA (accusations of being too dangerous for sport), and its effectiveness as a fight-ending technique. Examines the ethics and legality across combat sport rule sets.
I Switched to Rowing for Cardio (And Never Looked Back) — Men’s Health Personal account of replacing running with rowing machine as primary cardio: the joint relief, the full-body muscle engagement, and the mental freshness from switching modalities. Relevant for runners with knee or hip issues seeking low-impact alternatives. menshealth.com — https://www.menshealth.com/fitness/a62683288/switched-to-rowing-cardio/
Return of the Dragon — Bruce Lee Training Analysis of Bruce Lee’s training methodology and physical conditioning as documented in “Return of the Dragon”: his combination of Western bodybuilding, traditional Chinese martial arts, and personal physical culture that predated modern functional fitness.
Protein Rules for Athletes Research-backed protein intake guidelines for strength and endurance athletes: optimal daily intake (1.6–2.2g/kg), the role of leucine as the anabolic trigger, meal distribution for maximizing muscle protein synthesis, and plant vs animal source quality.
HILIT — High-Intensity Low-Impact Training Introduction to HILIT as a joint-friendly alternative to HIIT: achieving cardiovascular and metabolic intensity through rowing, cycling, swimming, and elliptical work without the impact loading that makes HIIT unsustainable for older athletes or those with joint issues.
This Simple Trait Is the Key to Longevity (outsideonline.com) Research identifying the psychological and behavioral trait most consistently associated with long healthy life — likely conscientiousness or consistent, purposeful daily activity — and what practical habits most reliably embody it. outsideonline.com — https://www.outsideonline.com/health/wellness/simple-trait-key-to-longevity/
Kimchi Diet Reduces Body Fat — Study Study showing that regular kimchi consumption (fermented Korean cabbage) is associated with reduced body fat percentage in a large cohort, with more pronounced effects from fresh versus fermented kimchi. Supports broader research on fermented food’s metabolic benefits. medicalnewstoday.com — https://www.medicalnewstoday.com/articles/kimchi-diet-reduces-body-fat
Better Than Metformin — New Longevity Drug Coverage of emerging compounds — possibly rapamycin, acarbose, or novel senolytics — showing anti-aging effects that outperform metformin’s well-documented longevity benefits in animal and early human trials.
Hair Loss Breakthrough — Sugar Gel New topical treatment using a sugar-based gel that promotes hair follicle regeneration by activating the Wnt signaling pathway, showing promise for androgenic alopecia in early clinical data reported by BBC and others. bbc.com
Hair Loss Research Update (Jan 2026) Follow-up coverage on hair regrowth treatment advances: sugar gel mechanism, JAK inhibitor results (baricitinib, ritlecitinib for alopecia areata), and emerging CRISPR-based approaches to androgenic alopecia.
ACL Rehabilitation Progress Notes (Apr 2025) Personal progress notes from ACL rehabilitation: quad strength milestones (single-leg press, leg extension load), limb symmetry index testing, plyometric readiness assessment, and return-to-sport criteria tracking.
Hip Exercises and Knee Pain Relief Hip strengthening protocol targeting the abductors, external rotators, and extensors to resolve patellofemoral pain: clamshells, lateral band walks, single-leg deadlifts, and hip thrusts. Addresses the proximal cause of many anterior knee pain presentations.
Patellar Tendonitis Fix Evidence-based protocol for resolving patellar tendinopathy: heavy slow resistance (HSR) with eccentric leg extensions, load management principles from tendon science, and why rest alone is counterproductive for tendon pathology.
A Week of Swimming in Cold Water Personal experiment documenting the effects of daily cold water swimming over one week: cold shock response adaptation, effects on sleep quality and recovery, mood elevation from endorphin release, and the practical acclimatization process.
Plant Protein Sources — Complete Guide Comprehensive guide to plant-based protein quality and quantity: combining incomplete proteins, leucine content of legumes, protein digestibility-corrected amino acid score (PDCAAS), and practical meal planning for athletes on plant-based diets.
SkiErg Technique Tutorial — Concept2 Proper SkiErg technique from Concept2: the rhythm of arm extension overhead, hip hinge timing, drive through the catch, and leg engagement. Correct technique dramatically increases power output and reduces lower back strain.
SkiErg Workout Programming Structured SkiErg training plans: 500m intervals, pyramid sets, steady-state aerobic sessions, and lactate threshold work. The SkiErg is particularly effective for developing cross-country skiing conditioning and upper-body aerobic power.
SkiErg Review — Is It Worth It? In-depth review of the Concept2 SkiErg for home gym use: upper body cardiovascular demand, calorie burn compared to rowing, noise profile, footprint, and value compared to other ergometer options for athletes seeking gym-free cardio.
Full Body SkiErg Workout Complete SkiErg session integrating single-arm pulls, double-arm intervals, and core-intensive variations to create a comprehensive upper body and cardiovascular conditioning workout. Suitable as a standalone session or cross-training complement to rowing or cycling.
SkiErg vs Rowing Machine Comparison of the Concept2 SkiErg and RowErg for cardiovascular training: muscle groups emphasized, caloric expenditure, technique complexity, and injury risk. Rowing provides a more complete lower body integration; SkiErg shifts emphasis toward the upper body and core.
Calisthenics Skills Progression Chart Visual roadmap for progressing through calisthenics skills from foundational (push-up, pull-up, dip) through intermediate (muscle-up, L-sit, handstand) to advanced (front lever, back lever, planche). Provides structured goalposts for bodyweight athletes.
Pull-Up Tutorial — From Zero to Ten Step-by-step guide for absolute beginners: scapular hangs, dead hangs, band-assisted pull-ups, negatives, and frequency progression to reach ten consecutive strict pull-ups. Emphasizes scapular depression and full arm extension as prerequisites.
Skin the Cat — Tutorial and Progressions Tutorial on the skin-the-cat (also called German hang entry): a shoulder mobility and strength exercise performed on a bar or rings where the body rotates backward and the shoulders enter extreme extension. Foundation for German hang, back lever, and ring inlocate progressions.
Skin the Cat — Advanced Variations Advanced skin-the-cat progressions: German hang holds with increasing duration, slow eccentrics into deep shoulder extension, and the transition toward back lever and front lever preparation. Develops extreme shoulder flexion range of motion active at end range.
Muscle Up Tutorial — Step by Step Complete muscle-up breakdown: false grip for strict ring muscle-up, transition mechanics, kipping vs strict comparison, and the common failure point at the transition phase. The muscle-up requires coordinated pull-up strength, explosive hip drive, and push-up strength.
Muscle Up Common Mistakes Analysis of the five most common muscle-up errors: insufficient false grip engagement, pulling too wide, lack of hip drive in the kip, early press before the transition, and failure to lock out overhead. Corrections target each specific breakdown point.
Wrist Strengthening for Calisthenics Wrist conditioning progressions essential before heavy planche, handstand, and ring work: wrist circles, knuckle push-ups, wrist push-ups, and finger extensions. Neglecting wrist conditioning is the most common cause of early calisthenics injury.
Kettlebell Exercises for Full Body Essential kettlebell movements for full body conditioning: the swing (posterior chain), Turkish get-up (integrated strength and stability), clean and press (total body power), and goblet squat (quad and hip strength). Each movement teaches different fundamental patterns.
Weight Bench Buying Guide — Home Gym Comparison of flat, adjustable, and FID (flat-incline-decline) benches for home gym use, covering weight capacity, pad quality, incline range, stability, and price-to-value ratio across budget, mid-range, and premium options.
Creatine Supplementation — Research Update Current research on creatine monohydrate: the evidence for 3–5g/day dosing, absence of loading phase requirement, cognitive benefits (brain creatine saturation), benefits for vegetarians with lower dietary creatine, and long-term safety data.
Iron Deficiency on a Plant-Based Diet Research on non-heme iron bioavailability in plant-based diets: the inhibitory effects of phytate, polyphenols, and calcium on absorption, the enhancing effect of vitamin C, and supplementation strategies for athletes with elevated iron needs.
Vegetarian Iron Sources — Complete List (healthline.com) Comprehensive list of high-iron plant foods: lentils (6.6mg/cup), spinach (6.4mg/cup), tofu (3.4mg/half cup), pumpkin seeds (4.2mg/oz), and fortified foods, with practical meal-planning strategies to meet iron RDAs without animal products. healthline.com — https://www.healthline.com/nutrition/iron-rich-plant-foods
5 Sleep Types — Research Study identifying five distinct sleep profiles in the population (beyond simple duration categories) and their different associations with health outcomes, disease risk, and psychological wellbeing. Suggests personalized sleep medicine may benefit from phenotyping beyond AHI and sleep time. news.com.au
Deep Squat and Knee Safety Research and expert guidance reviewing the evidence on whether deep squats are damaging to the knee: the conclusion that deep squats with proper mechanics are safe and even beneficial for knee health, contrary to the commonly repeated medical caution against squatting below parallel.
Deep Squat and Pancake Flexibility Fix (Feb 2026) Combined protocol for simultaneously improving deep squat mobility (ankle, hip) and pancake/straddle flexibility (adductor and hamstring length), treating the two as related functional movement goals with overlapping prerequisites.
Hamstring Stretching — Evidence-Based (Dec 2025) Research-backed hamstring stretching protocols comparing PNF (proprioceptive neuromuscular facilitation), static, and dynamic stretching: PNF produces the largest acute gains, while consistent static stretching produces long-term structural adaptation.
Blood Pressure After COVID (medicalnewstoday.com) Study documenting persistent blood pressure elevation in COVID-19 survivors months after acute infection, with proposed mechanisms including endothelial dysfunction, autonomic dysregulation, and residual inflammatory signaling. medicalnewstoday.com — https://www.medicalnewstoday.com/articles/blood-pressure-after-covid
Which Athletes Live Longest? Comparative longevity research across sports: endurance athletes (cyclists, runners) show the greatest lifespan extension; team sport athletes fall in the middle; strength sports show more variable outcomes depending on weight category and performance-enhancement history.
Row for Your Life — French Olympic Rowers Study (outsideonline.com) French study on the longevity of elite Olympic rowers, showing exceptional survival rates compared to age-matched controls. Rowing’s combination of high cardiovascular demand, full-body muscle engagement, and low impact appears uniquely longevity-promoting. outsideonline.com — https://www.outsideonline.com/health/training-performance/row-for-your-life/
Body Composition Goals and Measurements (Aug 2025) Personal notes documenting target body fat percentage, lean mass goals, and tracking methodology: DXA scan scheduling, DEXA vs InBody bioelectrical impedance comparison, and progress checkpoints for body composition goals.
Fat Infiltration in Muscle — Causes and Prevention Research on intramuscular fat infiltration (myosteatosis): caused by inactivity, aging, and metabolic dysfunction; associated with insulin resistance and impaired muscle contractility. Resistance training is the most effective intervention for reducing intramuscular fat.
Fatty Infiltration of Muscle (pubmed.ncbi.nlm.nih.gov) In-depth PubMed literature on myosteatosis: pathophysiology, measurement by MRI and CT, association with sarcopenia, and the dose-response relationship between resistance training volume and intramuscular fat reduction. pubmed.ncbi.nlm.nih.gov
BMI and Body Composition Research Studies challenging BMI as a health metric: its insensitivity to fat distribution, muscle mass, and ethnicity-specific risk — with superior alternatives including waist-to-height ratio, body fat percentage, and Relative Fat Mass (RFM) calculation.
5 Easy Steps to 12% Body Fat Practical protocol for achieving 12% body fat: calorie cycling between training and rest days, protein targeting at 2g/kg, resistance training frequency, cardio modality selection, and progress tracking with non-scale metrics.
BNP and Risk of Death (pubmed.ncbi.nlm.nih.gov) Research on B-type natriuretic peptide (BNP) as a cardiac biomarker: elevated BNP indicates ventricular wall stress and is a sensitive predictor of heart failure progression and cardiovascular mortality, making it a key marker in cardiac monitoring. pubmed.ncbi.nlm.nih.gov
Long COVID Blood Abnormalities (Nov 2025) — Nature Nature study identifying specific blood abnormalities in long COVID patients: persistent platelet hyperactivation, unusual fibrin microclot formation, and immune dysregulation patterns that distinguish long COVID from normal COVID recovery. nature.com
2-2-2 Training Method for Men Over 40 (Dec 2025) Training protocol designed for middle-aged athletes: 2 days strength training, 2 days cardiovascular conditioning, and 2 days dedicated mobility and recovery work — balancing all three pillars without overloading any single system in the context of slower recovery.
Biological Age in 60s with 20s Metrics (Jan 2026) Case study and protocol of an individual in their 60s maintaining biological age markers — VO2 max, grip strength, muscle mass, inflammatory markers — equivalent to a 20-year-old, attributing the achievement to specific training, diet, and sleep interventions.
Posture Exercises — Resistance Training in Good Posture (Aug 2025) Framework arguing that resistance training itself is the most effective posture correction tool when performed with correct alignment cues: pulls improve thoracic extension and scapular retraction more durably than postural stretches alone.
Race Walking and Ultramarathon Walking Introduction to race walking’s strict heel-toe and straight-leg technique and its application in ultramarathon events where power hiking and race walking replace running for time-on-feet economy. Explores walking as competitive sport, not merely rehabilitation exercise.
Personal Fitness Goals Notes (Aug 2025) Personal notes documenting health, strength, mobility, and body composition goals: specific targets for VO2 max, pull-ups, climbing grade, body fat percentage, flexibility benchmarks, and the timeline and strategy for achieving each.
Hangboarding for Climbers — Beginner to Advanced Structured hangboard progression from first sessions (10mm edge × 3 seconds) through intermediate max-hang protocols to advanced one-arm negatives and block-weight systems. Includes frequency recommendations and injury risk management for finger tendon development.
Freediving World Record — Croatian Diver (Aug 2025) Coverage of a Croatian freediver breaking a static apnea or depth record, with details on the physiology of elite breath-hold diving: mammalian dive reflex, spleen contraction releasing red blood cells, and the extreme bradycardia observed in elite freedivers.
Escape from Alcatraz Triathlon Course Guide (triathlonista.com) Course overview for the Escape from Alcatraz Triathlon: 1.5-mile open water swim from Alcatraz Island to San Francisco, 18-mile hilly bike course, and 8-mile run including the famous sand ladder. One of the most iconic and logistically complex triathlons in the world. triathlonista.com — https://triathlonista.com/escape-from-alcatraz-triathlon/
Respiratory Viruses Reignite Dormant Cancer Cells (Jul 2025) — Nature Research showing that respiratory viral infections (influenza, SARS-CoV-2) can reactivate latent cancer cells through NF-κB pathway activation and immune suppression, providing a possible mechanism for the observed post-viral cancer incidence increases. nature.com
Ozempic / Mounjaro — Rare Eye Risks (Aug 2025) Case reports and retrospective research linking GLP-1 agonist use with non-arteritic anterior ischemic optic neuropathy (NAION) — a rare but serious vision loss condition. Context for understanding the risk-benefit profile of semaglutide and tirzepatide. medicalnewstoday.com — https://www.medicalnewstoday.com/articles/ozempic-eye-risks
Saris H3 Smart Trainer Review In-depth review of the Saris H3 direct-drive smart trainer: power accuracy testing, ERG mode smoothness, noise level, cassette installation, and Zwift/TrainerRoad compatibility. Positioned as a strong value alternative to Wahoo KICKR in the mid-range trainer segment.
Schwinn IC4 Indoor Bike Review Review of the Schwinn IC4 exercise bike: magnetic resistance levels, Bluetooth connectivity to fitness apps, display quality, and comparison with Peloton as a lower-cost alternative. Popular for home gym use without a cycling-specific training background.
SmartSpin2K V3 Smart Bike Upgrade The SmartSpin2K controller that attaches to any spin bike and motorizes the resistance knob to respond to ERG mode commands from Zwift or TrainerRoad, converting a basic spin bike into a partially smart trainer without purchasing dedicated hardware.
Air Bike vs Stationary Bike — Which Is Better? Comparison of fan-powered air bikes (Rogue Echo, Assault Bike) versus magnetic resistance stationary bikes for cardiovascular training: the air bike’s self-regulating resistance and full-arm engagement versus the stationary bike’s data accuracy and pacing consistency.
Rogue Echo Bike Review Comprehensive review of the Rogue Echo Bike: chain drive vs belt drive Echo Bike V3 comparison, console metrics, fan noise, programming versatility, and durability. The Echo Bike is used widely in CrossFit boxes and home gyms for high-intensity interval work.
Vvolt E-Bike Trailer Attachment The Vvolt electric trailer system that attaches to any non-electric bicycle via the rear axle and provides electric-assist power, converting a standard bike to e-assist without replacing the bicycle itself.
ALSO TM-B Rivian E-Bike (Oct 2025) — Electrek Coverage of the ALSO TM-B electric mountain bike produced in partnership with Rivian branding: full suspension, enduro geometry, and adventure-focused specification for trail and bikepacking use. electrek.co
Rivian Full-Suspension E-Bike Rivian’s announcement of their full-suspension adventure e-bike: specs, motor configuration, battery integration, pricing, and availability timeline. Extends Rivian’s electric vehicle brand into the active outdoor electric mobility market.
REP Strive Series Curved Treadmill (Oct 2025) Review of REP Fitness’s non-motorized curved treadmill: biomechanical advantages of the curved belt (higher hamstring and glute activation, natural gait encouragement), noise profile, durability, and value for home gym use.
Sled Push vs Squat — Research Comparison (Oct 2025) Research comparing the sled push and back squat for lower body strength development: force production profiles, joint loading differences, practical applications for sport performance and rehabilitation, and whether they are interchangeable or complementary.
Black Seed Health Benefits (Nov 2025) Review of Nigella sativa (black seed / kalonji) research: clinical evidence for anti-inflammatory, antimicrobial, antidiabetic, and lipid-lowering effects. Black seed has been used in Islamic and Ayurvedic medicine for millennia; recent research is quantifying its mechanisms.
Garlic and Longevity — Study (Nov 2025) Research associating regular garlic consumption with improved cardiovascular markers (lower LDL, blood pressure, reduced arterial stiffness) and extended lifespan in population studies. Allicin and organo-sulfur compounds appear to be the primary active factors. pubmed.ncbi.nlm.nih.gov
Valley Fever — Fungal Infection Explainer (Aug 2025) CDC explainer on coccidioidomycosis (Valley Fever): a soil fungus endemic to the American Southwest that causes serious respiratory illness when spores are inhaled, with an expanding geographic range due to climate change and increasing cases in California’s Central Valley. cdc.gov — https://www.cdc.gov/fungal/diseases/coccidioidomycosis/
Centenarians Blood Differences — Nature Studies profiling the blood biochemistry of centenarians versus typical elderly: lower inflammation markers (CRP, IL-6), higher HDL, lower glucose and creatinine, and specific immune cell profiles that distinguish exceptional agers from those with typical mortality trajectories. nature.com
Scientists Discover Fat-Burning Switch (Aug 2025) — ScienceDaily Research identifying a molecular switch — possibly a receptor or signaling protein — that when activated significantly increases fat oxidation. Represents a potential pharmaceutical target for obesity and metabolic disease treatment. sciencedaily.com
Blood of Exceptionally Long-Lived People — Nature Research profiling biochemical characteristics in the blood of supercentenarians (110+): the factors present or absent in their blood that differ from healthy 80-year-olds, and what this reveals about the biology of extreme longevity. nature.com
Pancreatic Cancer and Sedentary Work (Dec 2025) Study linking prolonged occupational sitting with elevated pancreatic cancer risk, independent of leisure-time physical activity. One of the more alarming findings in sedentary behavior research, suggesting breaks from sitting are necessary even for those who exercise regularly. medicalnewstoday.com — https://www.medicalnewstoday.com/articles/pancreatic-cancer-sedentary
Type 4 Diabetes — New Classification (Sep 2025) Emerging research proposing “Type 4 Diabetes” as a distinct category: insulin-resistant lean elderly patients whose disease mechanism involves age-related immune dysfunction and adipose tissue inflammation rather than the obesity-driven mechanism of Type 2 diabetes.
Playing Wind Instruments Reduces Sleep Apnea Risk (Oct 2025) Study showing that regular wind instrument playing (didgeridoo, oboe, trumpet) strengthens pharyngeal and upper airway musculature, resulting in measurably lower Apnea-Hypopnea Index scores. A non-CPAP sleep apnea management strategy with substantial evidence behind it. pubmed.ncbi.nlm.nih.gov
DOSA Code — Heart Disease, Obesity, and Sleep Apnea Gene (Feb 2026) Research identifying a genetic variant (the “DOSA” gene or gene cluster) linking predisposition to obesity, cardiovascular disease, and obstructive sleep apnea through a shared molecular pathway, potentially explaining why these conditions cluster so strongly in certain families.
Oura Ring Lobbying in Washington (Feb 2026) Coverage of Oura Ring’s lobbying efforts to have wearable health data recognized in healthcare policy: insurance reimbursement for preventive monitoring, FDA regulatory pathways for wearable diagnostics, and the broader digital health advocacy agenda. theverge.com
Body Pod by Hume Health (Jan 2026) The Hume Body Pod — an at-home body composition device using air displacement plethysmography (the same technology as the BOD POD used in clinical settings) — measuring body fat percentage, lean mass, and bone mineral content with gold-standard accuracy in a consumer product. humehealthai.com — https://humehealthai.com/
Iron Deficiency and Plant-Based Diet (Nov 2025) Comprehensive review of iron deficiency prevalence in plant-based eaters: testing strategies (ferritin, transferrin saturation, hemoglobin), supplementation dosing (iron bisglycinate vs ferrous sulfate), and food-based strategies for maximizing iron intake and absorption.
Mind & Mental Health
Meditation And Mindfulness Can Have a Dark Side sciencealert.com — https://www.sciencealert.com/meditation-and-mindfulness-can-have-a-dark-side-that-we-dont-talk-about
A Science Alert article on documented adverse effects of meditation and mindfulness practice — including depersonalization, anxiety, depression, and psychotic episodes — particularly in intensive retreat settings. Counters the uncritical wellness-culture promotion of meditation. [→ health-fitness]
How Our Longest Nerve Orchestrates the Mind-Body Connection (vagus nerve) quantamagazine.org — https://www.quantamagazine.org/how-our-longest-nerve-orchestrates-the-mind-body-connection-20240826/
A Quanta Magazine explainer on the vagus nerve — the longest cranial nerve, connecting the brain to the heart, lungs, gut, and immune system — and its role as a two-way information highway mediating the mind-body connection. [→ health-fitness; neuroscience → mathematics-science]
Cold Exposure & Physiology
A Week of Swimming in Cold Water Can Change You on a Cellular Level sciencealert.com — https://www.sciencealert.com/a-week-of-swimming-in-cold-water-can-change-you-on-a-cellular-level
A Science Alert article on research showing that consistent cold-water immersion (a week or more) produces measurable cellular-level changes — including altered gene expression, metabolic adaptations, and anti-inflammatory effects. [→ health-fitness]
Croatian Freediver Shatters Record For Longest-Held Breath sciencealert.com — https://www.sciencealert.com/croatian-freediver-shatters-record-for-longest-held-breath
A Science Alert article on a new freediving breath-hold record by a Croatian athlete — combining extreme physical training with the physiology of the mammalian dive reflex, hypoxia tolerance, and voluntary apnea. [→ health-fitness; physiology → mathematics-science]
Food & Nutrition
The foods that make you smell more attractive bbc.com — https://www.bbc.com/future/article/20251031-the-foods-that-make-you-smell-more-attractive
A BBC Future article on research examining how diet affects body odour in ways that influence attractiveness — covering the effects of garlic, alcohol, red meat, and fasting on volatile organic compounds emitted through skin and breath. [→ health-fitness; food]
The True History Of Kettlebells https://youtu.be/NHdXYfArFAM
A YouTube video on the history of the kettlebell — from its origins as a Russian farming/measurement tool in the 18th century through its adoption by the Tsarist military and eventual global spread as a fitness implement. [→ health-fitness]