Blood in urine after running: do not assume it is harmless
Pink, red or brown urine after running deserves assessment. Explore exercise-related haematuria evidence, urgent warning signs and useful details to record.
Open health
Athlete health by sporting demand
Health information becomes useful when it respects the discipline, athlete, environment, level and stage of participation.
Demand map
Compare the physical, psychological and environmental demands that change health priorities between sports. This overview is not an individual treatment plan.
Concussion, cervical injury, dental trauma, safe return to contact
Energy availability, iron status, cardiac symptoms, load and recovery
REDs, weight-making, bone health, body image and mental health
Shoulder load, trunk control, workload spikes and return to serving/throwing
Cold exposure, altitude, respiratory health, speed-related trauma
Classification context, skin care, thermoregulation, equipment interface and access
Heat, neck load, reaction, concussion, burns and extraction planning
Growth, maturation, workload, sleep, safeguarding and long-term participation
October 2026 · current briefing
Recovery, mental health, anti-doping, heat, concussion, energy availability, Para athlete care and youth pathways—reviewed against primary guidance.
Sport-specific guidance
Educational, source-led content connected to the demands of each sport.
Pink, red or brown urine after running deserves assessment. Explore exercise-related haematuria evidence, urgent warning signs and useful details to record.
Open healthHow swimmers with atopic eczema can manage pool irritation, protect their skin barrier and recognise when a flare or infection needs a break and medical advice.
Open healthHeel pain in young footballers needs assessment, a view of the whole activity week and gradual return. Explore Sever’s disease and uncertain treatment evidence.
Open healthKnee pain below the kneecap in young basketball players needs careful assessment, whole-load planning and a return based on function rather than a fixed date.
Open healthReturning to golf after hip replacement involves more than a swing. Explore rehabilitation, walking demands and evidence limits without a universal return date.
Open healthAn urge to move the legs at night is not simply training soreness. Learn the restless-legs pattern, iron-testing context and limits of exercise evidence.
Open healthDiabetes management on land does not establish fitness for scuba diving. Explore specialist assessment, monitoring limits and the evidence behind dive planning.
Open healthFluoroquinolone antibiotics can affect tendons during or after treatment. Learn the warning signs, evidence limits and questions to discuss before running.
Open healthVitamin C cold-prevention claims need context. Compare older endurance studies, regular use versus treatment after symptoms, food sources and safety limits.
Open healthLearn when a cycling graze needs medical assessment, how minor wounds are protected, and why tetanus prevention and readiness to ride need separate checks.
Open healthSneezing and blocked noses can disrupt outdoor sport. Explore current rhinitis guidance, pollen planning, medication alertness and symptoms needing assessment.
Open healthSeparate fuel use in a fasted session from race performance and long-term fat loss, with evidence from reviews, cycling trials and sports-nutrition guidance.
Open healthA sudden pop or kicked feeling behind the ankle needs assessment. Understand Achilles rupture treatment trade-offs and why basketball return is individual.
Open healthHeavy menstrual bleeding can disrupt training and daily life. Learn which changes to report, why iron alone is not the whole answer, and when to seek care.
Open healthMelatonin is not a shortcut to sporting recovery. Examine the latest exercise evidence, daytime sleepiness, product-label uncertainty and safety questions.
Open healthReturning to sport after Long COVID needs more than a fitness test. Learn why delayed symptom flares matter and when individual assessment is essential.
Open healthManual sports massage may ease soreness, but comfort is not proof of restored performance. Explore the evidence, its correction and practical safety limits.
Open healthA dental injury needs prompt action, not a wait until full time. Learn the permanent-versus-baby-tooth distinction and how teams can prepare for urgent care.
Open healthA knee osteoarthritis diagnosis is not an automatic running ban. Understand exercise evidence, its limits and symptoms that need individual assessment.
Open healthUnderstand the 2025 guidance on PFO screening in scuba divers, the limits of closure evidence and why suspected decompression illness needs urgent care.
Open healthBeta-alanine can raise muscle carnosine, but tingling and laboratory endurance are not race results. Explore the evidence, safety limits and product risks.
Open healthYouth sport burnout can involve exhaustion, lost enjoyment and school stress. Learn how families and coaches can respond without blame or a DIY diagnosis.
Open healthConcussion care for Deaf and hard-of-hearing athletes needs accessible communication and individual context, not a score compared blindly with hearing norms.
Open healthUrinary leakage in powerlifting varies by lift, load and context. Learn why surveys cannot prescribe a belt or stance change, and when to seek tailored care.
Open healthPage 2 of 12 · 282 health articles

Clinical collaboration
Assessment, diagnosis, rehabilitation, nutrition, mental health and sport-specific return criteria often require a team—not a single opinion.
Primary evidence shelf
Selected starting points for complex athlete-health questions.
Medical notice: Content is for education and professional discussion. It is not diagnosis, treatment or emergency advice. Seek a qualified clinician for personal care and local emergency services for urgent risk.
Explore 2025
Read original-study findings, methods and limits, with links to the published evidence.

Running · Health
Two 2025 studies illustrate different questions about equipment, biomechanics and injury outcomes.
Read the full reportMathias Kristian Pedersen et al. · CC BY 4.0 · resized, uncropped

Gaelic games · Health
Two 2025 surveys and official rules frame questions about consistent equipment use.
Read the full reportBurke et al. · CC BY 4.0 · resized, uncropped

Exercise physiology · Health
A six-week comparison combines a fitness test with detailed serum measurements.
Read the full reportSu, Wantang; Liu, Jianming; Wang, Aozhe; Zhang, Haifeng; Sun, Yaqi; Yan, Zhiyi; Svensson, Michael; Yu, Ji-Guo; Zhao, Li · CC BY 4.0 · resized, uncropped