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Everyone can spare four minutes, right?

If you thought 8-minute abs was a quick way to tone your midsection, this workout cuts that in half and still gets great results. Don’t expect this to be easy, though; if you want results in such a short amount of time, it’s definitely going to be a tough workout.

The workout is a simple two-minute rotation of four moves done for 30 seconds each.

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Watch as he shows exactly how to do each move and explains why they work.

Here are the four exercises you need to know:

  • Knee to elbow planks
  • Plank jacks
  • Alternating side plank holds
  • Plank up-downs

Repeat the rotation two times for the full workout.

RELATED: You’re doing it wrong: Here’s why your ab exercises aren’t giving you a six-pack

As a bonus, your shoulders and arms will get a good workout too, because it’s based on a plank position, which works your whole body.

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