Sarah Klein
Writer
The Benefits of Creatine for Runners and How to Add it to Your Nutrition Plan
Can this go-to supplement for bodybuilders also help endurance athletes?
Can Wim Hof Breathing Really Boost Your Running Performance?
Health & Injuries.
HIIT vs. LISS: Which Running Workout Is Best for You?
Both high-intensity intervals and low-intensity runs deserve a place in your training plan. Here’s why.
Heart Rate Training Can Streamline Your Workouts for Better Results
Here’s how to find your zones and train accordingly.
4 Pasta Alternatives to Fuel Your Run
Power your workout—and your recovery—with these delicious novelty noodles.
14 Scales That Do a Lot More Than Measure Your Weight
One number doesn’t tell the whole story.
Kathrine Switzer’s Advice on Staying Fit at 70—and Beyond
This advocate for women’s running hasn’t lost her vigor yet.
8 Things Beginning Runners Over 40 Need to Know
You have a lot to gain from running—but it’s important to avoid injury.
Why Everything Hurts in the Morning, According to Science
Your muscles and joints really are stiffer and more sore when you get out of bed. Here’s why.
10 Strange Facts About Pain, Explained
This advocate for women’s running hasn’t lost her vigor yet.
7 Things the Color of Your Pee Says About Your Health
This advocate for women’s running hasn’t lost her vigor yet.
8 Things Your Sweat Is Trying to Tell You
There’s a lot your perspiration can say besides that you just went for a run.