Bicycle crunches are a great exercise for building core strength in runners – and they are a fair bit harder than they look. Now, we don’t have to remind you of the importance of doing strength ...

Certain core muscles can be difficult to target with normal planks and crunches. This lower ab and oblique workout hits them all. If your harder-to-hit core muscles had a campaign slogan, it would be ...

Add Yahoo as a preferred source to see more of our stories on Google. Unlike regular crunches, which require lifting the upper body off the ground, reverse crunches involve lifting the hips and legs ...

I'm not a huge fan of crunches. The move is easy to perform incorrectly and doing so puts a lot of strain on the neck. Another reason I don't love them is that if you're short on time, they aren't the ...

This exercise only targets the abdominal muscles, so it’s not a functional core workout. Crunches can be hard on your back and neck, and may not be safe for everyone. Share on Pinterest The crunch is ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." If your body were a bicycle, your abs and back muscles—your core—would be the frame. You need a ...