Using six of the top exercises for a flat stomach, we created this workout to target the different core muscles while burning calories for fat loss. Mountain climbers are one exercise that’s great for raising your heart rate, while engaging your core muscles to hold you steady in the position. So, it burns calories and strengthens muscles. Leg raises target your lower abs, sit ups your upper abs, and Russian twists your obliques. With this workout, you’ll engage all the important ab muscles to get real, visible results.

What You’ll Need: A mat to lay on the floor, a light dumbbell (2-5 lbs.), and a gym timer (Gymboss is a free to download app).

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What to Do: Perform each exercise for 40 seconds, taking 20-second breaks in between. Finish all exercises in order, then repeat.

Beginners: 3 rounds

Intermediate: 4 rounds

Advanced: 5 rounds

Below we’ve included videos showing how to perform each move. Using proper form helps prevent injuries and ensures you’re getting the most out of your workout.

Exercises:

1. Mountain Climbers

2. Leg Raises with Dumbbell

3. Russian Twist with Dumbbell

4. Straight Leg Sit Up

5. Jackknife Crunch

6. Plank

Mountain Climbers

Leg Raises with Dumbbell

Russian Twist

Straight Leg Sit Up

Jackknife Crunch

Plank

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