While sit-ups have long been a go-to for strengthening ... such as a couch," according to Dr. Larson. "Placing a small ball or a couple of pillows behind the back can help to engage the deeper ...

If you are looking to spice up your workout, why not try something ... and enhance balance. How to do it: Sit on the ball and walk your feet forward until your lower back is supported by the ...

To target a variety of muscles in the core while standing, you’ll be doing moves where you bend, twist and raise your legs ...

Half sit up Sit up straight with your knees bent and ... body to make the exercise easier or hold a dumbbell or medicine ball for extra intensity. 9. Beast with shoulder tap Get on all fours ...

Sit-ups require you to lift all the way up ... exercises done in a prone — face-down — position on an exercise ball are just as effective, which may be a helpful alternative to avoid back ...