SmartGym is rolling out a major update today, adding new ways to compare workouts over time, custom heart rate zones, new ...

The workout app is bringing back heart rate training (sort of).

Heart rate zone training can transform your running by helping you train smarter, not just harder. By learning your personal maximum and reserve heart rates, you can tailor workouts to your unique ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. One million years ago ...

Heart rate zones can transform the way you train by helping you target specific fitness goals, from fat-burning to building endurance and speed. By understanding your maximum heart rate and the ...

How your systems respond to the stress of running 26.2 miles depends on your effort – so train your body to run better at a ...

Eric Samulski breaks down potential starting pitcher adds based on early season command metrics.

Understand why VO₂ max lowers as you get older, plus learn tips on how to keep it high, and why it's important to do so for ...

Training for a specific goal race is a great way for runners to maintain focus and build fitness. As you complete race-specific workouts, your body becomes stronger and you get closer to achieving ...

With injuries impacting the pitching staff, Scholtens may now be leaned on this summer in a starting role, where he has the ...

Makai Lemon has good instincts in zone coverage and catches almost everything thrown his way. Harry How / Shortly after the ...