Recent studies show testosterone replacement therapy may increase heart disease risk in men. Learn about natural alternatives ...

If you're a casual-to-obsessed observer of fitness trends, you may have come across “Zone 2” training—heard about it on ...

High-intensity interval training is important, but coming back to your breath can be crucial to helping you train.

From 5K time to heartrate recovery, personal trainers share the different ways we can see how we measure up for our age group ...