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Athlete completing supervised treadmill stress test
  • by Ben Liley

4 Maximum Heart Rate Methods and When a Lab Test Is Worth It

Use Tanaka for a quick estimate, wear a chest strap to log real peak readings, and reserve a graded exercise test for clinical precision.

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Overnight sleep study in clinical laboratory
  • by Ben Liley

Why Time in Bed vs Sleep Episode Changes Your Sleep Efficiency Score

Understand what a sleep efficiency percent shows, why the denominator (time in bed vs sleep episode) matters, and how SOL/WASO drive scores.

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Adult practicing slow resonance breathing
  • by Ben Liley

4 Week Resonance Breathwork for HRV with No Subscription Tracking

Science based resonance breathwork at about six breaths per minute, a step by step resonance frequency test and a four week training plan. Track results...

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Adult performing barbell deadlift in gym
  • by Ben Liley

Lower Metabolic Age in 2–3 Months: UK Plan, Lift, Eat Protein, Track Free

UK plan to improve metabolic age: lift 2–4x weekly, eat 25–30g protein per meal, follow a Mediterranean diet, and track trends subscription-free.

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Person using smart scale beside phone
  • by Ben Liley

Subscription free smart scale: Make Apple Health your single source

Choose a HealthKit smart scale that syncs to Apple Health, safeguards privacy, and works with no subscription. Setup and troubleshooting.

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Athlete checking wearable before strength training
  • by Ben Liley

Evidence First Cycle Syncing Workouts for UK Women: Track 2–3 Cycles

Evidence first guide for UK women: learn to test cycle syncing workouts with personal tracking, recovery metrics and optional Voltra.

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