Jump up to a bar (or step on to a box if you need help reaching), and hang from the bar with both palms facing away from you. Use your abdominal muscles to raise both feet as high as you can, keeping ...

Everyone likes a good challenge. That's why we all love to hate exercises like burpees. You might not think of isometric exercises—that's planks and wall sits—as on the same level as those high-energy ...

This ridiculously hard L-sit exercise works your entire body without moving a muscle. These are the progressions you can use to get strong enough to do it. Everyone likes a good challenge. That’s why ...