European leaders closed ranks behind Denmark as President Donald Trump amplified threats to seize Greenland, warning that existing borders were non-negotiable and arguing Arctic security must be ...

Paired with your daily calories burned, you can determine your total calorie expenditure.

How to Run Faster was created with Runner’s World Training Plans in mind. They are designed for runners of all levels ...

For decades, Jeff Galloway’s heart was at growing risk of giving out, but neither he nor his doctors knew it.

Understanding your heart rate can be helpful to calibrate your perceived exertion, especially on easy and steady runs. This ...

Watch out, Starbucks and Dunkin'; these ambitious coffee chains want to become Americans' new morning stops for their lattes, ...