Skip push-ups and planks — I just did this 15-minute standing upper-body workout and my arms are on fire

Indoor cycling is a low-impact way to increase your training load and I found it an enjoyable and effective addition to my running during marathon training

What is a sissy squat, and what happens when you do 100 reps every day for one week Our writer found out with this squat challenge

A full-body workout you can do in the comfort of your own home — no squat racks or barbells required

I tried the elephant walk and discovered just how stiff my hamstrings really are

The treadmill isn't necessarily easier, but it can sure feel