You’re now halfway through Svava Sigbertsdottir’s 30-day fat-burning home workout challenge! Day 16 doesn’t require any equipment. Let’s dive in.

Today, you’ll be doing sumo squats, high planks into downward dog, and side planks—movements designed to make you sweat. Control each exercise to really feel the burn in your core; this builds strength and stamina. As Svava says, if it’s not challenging, your core won’t get the workout it needs to become toned.

When you start to feel tired, remember to keep your chest open and breathe deeply instead of hunching over. This helps with your breathing and keeps you energized.

You’ve got this—keep moving! The routine is 10 minutes long, with five moves and two sets. Do each move for 40 seconds, then rest for 20 seconds. Repeat the sequence one more time.