There’s been a stark rise in autoimmune disorders over the past 50 years, from type 1 diabetes and multiple sclerosis to celiac disease and asthma. The first step toward a cure is understanding and controlling the causes.
Banish boredom, boost your athleticism, and prevent joint injury with this full-body transverse-plane workout.
Your Qs: Choosing an elliptical, giving blood, and how much protein you really need.
Go behind the scenes at our October cover shoot with the adventurer and endurance hiker.