She's a Pro Dancer on Dancing With the Stars, and This Is Her Workout Routine

"This is my favorite cardio workout because it's quick but gets you sweating and your heart rate up quickly! The actual workout is 20 minutes with a 10-minute warmup and 10-minute cooldown. On weeks when I feel like I need a little extra activity, I will do this a few times a week and add in abs at the end before I cool down."

Britt's Workout:
Repeat this circuit twice after a warmup. Do 50 seconds of each exercise followed by 10 seconds of rest.

• Jumping jack
• Side lunge
• Mountain climber
• Speed skater
• Run in place
• Plank
• Shuffle squat
• Jump rope
• Lunge
• High knees