If you are looking for an amazing booty and abs workout, you've come to the right place. In this routine, fitness trainer Nikki Keeshin [1] takes you through 30 minutes of her signature glute and core exercises — like hydrant circles, glute-bridge pyramids, and corkscrew reverse crunches — that you will definitely feel tomorrow. Add a resistance band to feel the burn with each move!

Nikki's outfit: LSKD