Ranked number 4 in terms of overall effectiveness for the oblique muscle group, this exercise not only works your abdominal muscles, but also works on the whole core! It beats the traditional ab crunch, which ranks as number 11!

Start by lying face down on the ground

Place your elbows and forearms underneath your chest, with your elbows lined up with your shoulders

Prop yourself up to form a bridge using your toes and forearms

For beginners, start with a hold for 10 seconds, gradually increasing to 60 seconds.

Repeat 3-4 times.