Many people have the false impression that they need to spend hours in the gym doing hundreds of repetitions of crunches and crunches to have a flat stomach and strong abs. In this article I’m going to show you some much more efficient workouts that will only take about six minutes.

There are three levels: novice, advanced, and hard. Start with the novice circuit … try it out for several workouts and master it before moving on to the advanced circuit. However, if you’re feeling brave enough … feel free to give the hard training a try!

Abs Circuit for Newbies

** This routine is a circuit so you will not rest between exercises. Go from one exercise to another without resting. Do the circuit 3 times and rest 45 seconds between sets.

1. Mountain climber: 30 seconds

2.Lying hip extension 15 reps

3. Birddog 8 reps per side

4. Iron: 30 seconds

Advanced abdominal circuit

** This routine is a circuit so you will not rest between exercises. Go from one exercise to another without resting. Do the circuit 3 times and rest 30 seconds between sets.

1. Stability Ball Jackknife 15 reps

2. Renegade Dumbbell Row 8 reps per side

3. Launch the stability ball 15 repetitions

4. Crocodile tracking: 20 seconds

5. Iron: 60 seconds

Hardcore abs circuit

** This routine is a circuit so you will not rest between exercises. Go from one exercise to another without resting. Do the circuit 2 times and rest 30 seconds between sets.

1. Windshield wiper 10 reps per side

2. Hanging leg raises 12 reps

3. Windshield wipers 10 repetitions per side

4. Hanging leg raises 12 reps

5. L-Pullups 12 reps

6. Launch the stability ball 12 repetitions

7. Sledge Hammer Slam 10 reps per side

You don’t have to spend all day in the gym to build rock-hard abs, in fact, you can do a great core workout in just a few minutes, as these workouts here today demonstrated.