Cardio is good. Cardio that incorporates core strength at the same time is better. This workout lets you check off both without stepping foot on a treadmill or attempting a few lazy sit-ups on the mat. 

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The 25-minute routine features nontraditional core and cardio exercises to prevent boredom. You'll perform some standing and some on the floor, but all of them will hit every inch of your core. You need zero equipment for this one, but an exercise mat is optional if you'd prefer. 

To recap: No equipment is needed for this workout. Complete a dynamic warm-up (~1.5 minutes), followed by a 25-minute workout, and a cool-down stretch (~2 minutes).

Workout:
Standing Lateral Crunch
Squat With Toe Tap
Squat Walk-Out With Row
Flutter Kick
Weightless Windmill
Squat With Side Crunch
Plank With Elbow Tap
Starfish
Reach and Pull
Standing Kickback
Sumo Squat to Tip Toe
Standing High-Knee Crunch
Frog Squat
Forward Curtsy
Squat With Side Reach
Plank With Tuck

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