You’re halfway through Svava Sigbertsdottir’s 30-day fat-burning home workout challenge! Day 16 requires no equipment, so let’s jump right in.

Today’s workout includes sumo squats, high planks into downward dog, and side planks. These exercises have a twist that will make you sweat and really feel the burn in your core. It’s important to control each movement to build strength and stamina. Remember, if it was easy, your core wouldn’t get the workout it needs to get toned.

When you start to feel tired, make sure to open your chest and breathe deeply instead of slumping forward, as this helps with better breathing.

You’ve got this! Keep moving. The workout is 10 minutes long, with five moves, performed in two sets. Do each move for 40 seconds, then rest for 20 seconds, and repeat one more time.