Once you've got a resistance band to hand and you're pumped to work your core, you're ready to take on Yu's effective five-move workout. Watch Cindy Yu's five-move resistance band core workout ...

There should be light-to-moderate tension in the band. 3. Pulse the arms straight up with palms facing up (the resistance will increase!), trying to keep the bands from dropping below your hips.

You only need 5 moves and a resistance band to strengthen your 'deep core' muscle, build your abs and boost your balance No crunches, no problem — sculpt your abs in just 10 minutes with this ...