Trader physical health — sleep, posture, exercise

Sleep = biggest performance lever traderowi. Research (Matthew Walker, UC Berkeley): 8h sleep = baseline cognition. 7h = 95% baseline (marginal impact). 6h = 80% baseline (-20%). 5h = 60% baseline (-40%). 4h = 50% baseline (-50%, equivalent to legally drunk). Trading impact: sleep-deprived trader makes 20-50% worse decisions. Risk-taking increases (impulsivity), emotional regulation decreases, pattern recognition impaired. Single bad night: 5h sleep night → next day trading = 40% impaired. Typical retail trader loses €200-500 single bad day. Multiple nights compound. Week of 5h sleep = financial catastrophe potential. Sleep stages important: (1) Deep sleep (slow-wave): physical recovery, immune function. (2) REM sleep: memory consolidation, problem solving. Need both. Skip = cognitive decline. Sleep optimization: (1) Consistent bedtime + wake time (even weekends). (2) Dark room (blackout curtains). (3) Cool 18-20°C. (4) NO screens 1h before bed (blue light blocks melatonin). (5) NO caffeine after 14:00. (6) NO alcohol (disrupts REM dramatically). (7) Wind-down routine — reading, meditation. Sleep tracking: Oura Ring ($300) gold standard. Apple Watch decent. WHOOP subscription. Free: phone sleep apps. Tracking reveals patterns. Mike case: tracking showed 6.5h average → optimized 7.5h → trading WR 55% → 62% same strategy. Sleep alone.

Ergonomic setup = long-term health investment. Monitor positioning: top of screen at eye-level. Distance 50-70 cm. Multiple monitors? Primary center, secondaries 30° angles. Chair: lumbar support, adjustable height, knees 90° angle. Quality chair €300-1000 worthwhile (10+ years lifespan). Herman Miller, Steelcase Leap. Cheaper IKEA Markus €200 decent. Keyboard + mouse: keyboard wrists neutral (NIE bent up/down). Mouse near body, NIE far reach. Ergonomic mouse logitech €50-100. Desk height: forearms parallel ground when typing. Adjustable standing desk ideal — alternate sit/stand. Lighting: avoid screen glare. Indirect overhead + desk lamp. Common problems retail traders: (1) Slouching forward 12h = back pain + neck strain. (2) Wrist hyperextension = carpal tunnel risk. (3) Eye strain z screens 12h = headaches + dry eyes. (4) Sedentary 12h = blood circulation poor → brain fog. Breaks: 5 min per 60 min minimum. Stand up, walk, stretch. 25 min Pomodoro technique popular. Standing desk: alternate 30 min sit, 30 min stand. Reduces sedentary impact. Investment: ergonomic setup €500-2000 = 10× ROI long-term (health saves career). Cheap setup = chronic pain career-ending. Krzysztof case: pre-ergonomic setup chronic back pain mies. 18. Invested €1000 chair + standing desk. Pain resolved 4 mies. Trading hours increased 4h → 6h capacity. €15k/rok yield increase.

Exercise + nutrition = cognitive performance foundation. Exercise minimum 30 min daily: Cardio: running, cycling, swimming 4×/week. Improves cardiovascular = brain blood flow. Releases BDNF (brain-derived neurotrophic factor) — supports neuroplasticity (learning new patterns critical traderowi). Strength training: 2-3×/week. Bodyweight (push-ups, squats) lub gym. Maintains muscle mass (decline 1%/rok past 30). Testosterone optimal levels — emotional stability. Optimal mix: 4 cardio sessions + 2-3 strength sessions weekly. Morning before trading ideal (sets up mental energy). Pro insight: Wall Street firms gym programs Goldman Sachs, JP Morgan. Bridgewater Dalio meditation + exercise daily. NIE coincidence pro traders prioritize fitness. Nutrition basics: (1) Protein 1g/kg body weight: chicken, fish, eggs, legumes. Sustains energy, NIE blood sugar spikes. (2) Complex carbs: oats, rice, sweet potato. Slow energy release, brain fuel sustained. (3) Vegetables 2-3 servings daily: micronutrients, fiber, brain health. (4) Healthy fats: nuts, avocado, olive oil. Omega-3 brain function. (5) Avoid: sugar spikes (energy drinks, soda, candy) — peak then crash, terrible dla decisions. Processed food — inflammation. Caffeine: 200mg/day max (2 cups coffee). Overdose = anxiety, jittery decisions. Last cup before 14:00 (impacts sleep). Hydration 2L water daily: dehydration 1% body water = 10% cognitive decline. Keep water bottle at desk. Anna case: implemented exercise 4×/week + nutrition cleanup. 8 weeks: trading anxiety reduced 50%, decision clarity improved measurably. Year 2 attributable: +€5k profit.

Eye health = often overlooked trader concern. Common problems traderzy: (1) Computer Vision Syndrome (CVS): 50-90% screen workers experience. Symptoms: dry eyes, blurred vision, headaches, neck/shoulder pain. (2) Myopia progression: prolonged near focus = nearsightedness worsens. Adults too. (3) Blue light exposure: disrupts circadian rhythm. Evening screens = poor sleep. (4) Glare + reflection: causes eye strain. 20-20-20 rule: every 20 minutes, look 20 feet away (6 meters) for 20 seconds. Allows eye muscles relax z continuous near focus. Effective + simple. Blue light filtering: Software: f.lux (free), Windows Night Light, macOS Night Shift. Reduce blue spectrum evening. Hardware: blue light glasses (€20-100). Effectiveness debated, but subjective relief common. Monitor settings: brightness match ambient (NIE max brightness). Color temperature warmer evening. Anti-glare matte screens. Lighting: avoid bright window behind screen (glare). Indirect overhead lighting + desk lamp. NIE dark room z bright screen (extreme contrast = strain). Eye care routine: (1) 20-20-20 rule throughout day. (2) Eye drops (artificial tears) if dry. (3) Blink consciously — staring screens reduces blinking 50%. (4) Eye exercises — eye rolls, focus near/far. (5) Annual eye exam. Sleep impact eyes: blue light evening blocks melatonin → poor sleep. Use red/orange filter screen 2h before bed. Better sleep = better trading. Compound benefit.