4 Quick 15-Minute Ab Workouts for a Flatter Stomach

We’ve curated some of the most effective abdominal exercises into four distinct workouts, each requiring 15 minutes or less to complete. These routines are designed to help you achieve a flatter stomach and enhance overall functional athleticism.

To maximize effectiveness, limit breaks to only the time it takes to transition between exercises. You can incorporate these workouts into your fitness plan by rotating through them four days per week, or by performing the same workout four times consecutively before moving on to the next one the following week. Both approaches offer unique challenges and benefits. While some exercises may utilize equipment, most can be easily modified for bodyweight-only execution.

Workout #1

1. Low Plank W/ Single Leg Hover – 4 sets of 30 seconds
2. Single Arm DB Crunches – 3 sets of 20 (10 Each Side)
3. Leg Raises OR Hanging Knee Tuck – 4 sets of 15
4. Weighted Russian Twists – 4 sets of 30

Workout #2

1. Bird Dog W/Band or DB – 3 sets of 20 (10 each side)
2. Windshield Wipers – 3 sets of 16
3. Reverse Crunch W/DB – 3 sets of 25
4. Side Plank Hold 4 sets of 30 seconds

Workout #3

1. Resisted Flutter Kicks 4 sets of 50
2. DB Thai Block Crunch 3 sets of 10 Each Side
3. Diagonal Pivot Knee Tucks 3 sets of 20
4. Weighted OVH Sit Up – 3 sets of 15

Workout #4

1. Side Plank Low to High Side 3 sets of 10 (5 Right, 5 Left)
2. Dead Bug W/ Weight 3 sets of 20
3. Single Leg Tuck + Lift 3 sets of 10 (Each Side)
4. Seated Over Unders 3 sets of 20 (10 Right, 10 Left)