Reps: 30 seconds of crunches, then 30 seconds with hold.
- Lie on your back with a neutral spine. Lift legs up and bend knees so they are at a 90-degree angle. Place hands behind your head or crossed in front of your chest (not shown).
- Lift your head, shoulders, and back so they are off the ground, focusing on pulling from your core. Try to touch your elbows to your knees.
- Lower to complete one rep. Repeat for 30 seconds.
- After 30 seconds, perform three tabletop crunches as before, but hold at the top with elbows to knees for three seconds at the last crunch. Lower down, then repeat this three crunches, three-second hold sequence for 30 seconds.
