5. Lying leg raise
How to do it: Lie down flat on the ground with your hands placed palm down under your glutes. Now raise your legs perpendicular to the ground and then lower them back, but do it without letting your heels touch the ground. Start off with one set of 12 reps and gradually increase the number of reps as your body becomes stronger.
What it works on: The lying leg raise is one of the most effective exercises for abs. It’s one of the most simple, yet transformative moves that you can do.