Being Sore After a Workout Doesn't Mean Your Muscles Are Growing
There’s very little evidence to show that being sore indicates muscle damage or faster muscle growth, or that a lack of soreness means that your workout wasn’t effective.
How to Actually Stop Slouching All the Time
These core strengthening moves will go a long way towards fixing your bad posture.
K. Aleisha Fetters
This Is What Happens to Your Body When You First Start Working Out
Often referred to as 'newbie gains,' the effect is not purely psychological.
How Fast Can You Expect to Build Muscle Naturally?
An expert trainer explains the role of genetics, muscle memory, and lifestyle when you're trying to gain as much strength as possible—without turning to supplements or steroids.
Building Muscle Doesn’t Require Lifting Until You Can’t Lift Anymore
Here’s a closer look at the science of muscle fatigue and what it all means for gaining strength.
This Is How Running and Cycling Affect the Way Your Body Builds Muscle
How much cardio should you do when you're trying to get stronger?
The Length of Your Ring Finger Can Help Predict Your Athleticism
There's more than two decades of evidence to draw from.
Our Ancient Ancestors Would Crush Us in a Fitness Competition
We’ve evolved into a bunch of out of shape weaklings.
Your Muscles Don't Always Need a Day of Rest Between Workouts
A new study shows that rest is not as important to muscle growth as was previously thought.
This Is the Effect Working Out Has on Your Bones
How active you are as a kid affects your bones forever.
We Looked Into Whether Having Sex Affects Your Athletic Performance
Some coaches tell their athletes to avoid having sex before a big game.
Justin Lehmiller, PhD
The Little-Known Advantages of Being an Older Athlete
The way athletes like Roger Federer and Tom Brady think can help explain why they remain dominant.