Chris Nayna reveals how to do the mythical typewriter push-up

Can you knock out 50 push-ups? Then you might be ready to try typewriter push-ups, the toughest of all push-up variations

How to conquer the Everest challenge

This total-body burner is a test of endurance, strength and determination. Use these tips to record a sky-high score

How to ace the pressure cooker challenge

Looking for a total body metabolic burner? Try the pressure cooker challenge. Here’s how to nail it with strict form for the ultimate burn.