Endurance Training

The Beginner's Guide to Open-Water Swimming

Build confidence and skill before your first big dip

What’s New in Hydration Research

Hydrogels, electrolytes, and drink frequency top the list at this year’s ACSM conference

The Latest Research on Protein and Muscle-Building 

Insights from this year’s ACSM conference on how to lift, what to eat, and how that affects endurance athletes

Have We Really Found the Limit of Human Endurance?

A new study of transcontinental racers pegs the digestive tract as the limiting factor in extreme feats of sustained endurance

The Hill That You Love to Hate

Thoughts on a love/hate relationship with an incline

Training Apparel That’s Made in the USA

A new startup called Vast Terrain taps U.S. suppliers to make top-shelf goods

She Learned to Bike at 20. Now She's a Champion.

Last July, then 28-year-old Alexandera Houchin won the women's Tour Divide, a 2,745-mile race from Canada to Mexico over the Continental Divide. Next on her list? The new Dirty Kanza XL, a 350-mile unsupported race across Kansas.

Blood-Flow Restriction Therapy Rapidly Rebuilt My Body

This technique might just revolutionize physical therapy

Yes, Your Physical Fitness Can Reduce Your Cancer Risk

It’s not a miracle, and it’s not a secret, but the link between fitness levels and the risk of lung and colorectal cancers is impressively strong

The Simplest Sport Is the Best Sport