Instead of push-ups, try this upper-body exercise to build strong pecs, arms and core muscles
The Z press builds upper-body strength and stability from a seated position. Here's how to do it and the benefits.
If You Can Hold This Pose for 60 Seconds, You're Stronger Than Most
Think you're strong? Put your muscles to the test with this 60-second challenge. Find out if you have what it takes to hold ...