Morning or evening workout: which is better for sleep? What the studies show and how long before bed a hard workout should end.
Slept 8 hours and still got a low sleep score? 8 hidden causes (alcohol, late meals, caffeine, blood sugar, environment, training) and how to find yours.
Oura, Apple Watch, WHOOP, Garmin or Fitbit: which measures sleep, HRV, steps, VO2 max and calories best? A ranking by metric, from published studies.
Is weight training safe for children? Based on 30 years of research, we debunk the myths about resistance training for kids and show the real benefits.
The truth about creatine, a supplement with decades of research. Learn how to use it for strength, muscle and brain health, and see the myths debunked.
Understand the difference between physical activity, exercise and sport, and how each one affects health, lab tests and performance.
Is pain from running normal or an injury? How to tell them apart, the most common running injuries, when to stop and when to see a sports doctor.
Nausea, cramps and the urge to find a bathroom while running have a cause. Why they happen, how much carbohydrate to use and how to train your gut.
RED-S is low energy in sport: when you eat less than your training needs, the body shuts down periods and weakens bone. Signs and treatment.