Most of us exercise to be healthier, but also look better. Tight abdominal muscles are not a necessity, but that doesn’t mean that you can’t have them. Here’s a perfect exercise which will tighten your muscles and provide a flat stomach without sit-ups.

The exercise targets all the core muscles at the same time. Other exercises usually engage only the surface muscles known as the six pack, but this exercise targets the transverse abdominals, gluteus maximus and anterior deltoids. As the Journal of Medicine and Science has proven, the exercise engages all your muscles simultaneously, improving your strength, stability and overall fitness.

This exercises offers more benefits because it works out the transverse abdominals, muscles that run sideways beneath the top layer of abdominal muscles. They are responsible for pulling and tightening the core muscles. Sit-ups do not engage these often overlooked muscles, which can actually make your stomach flat and reduce your waistline.

Here’s how to do the exercise:

Start with your hands and knees on the ground, with your palms on the floor separated at about shoulder’s width. Elongate your neck and lift your head so that your face is parallel to the floor. Now, extend the right leg back and rest your weight on the toes, then extend the left leg in the same position. The weight of your body should be distributed evenly on your hands and toes. The buttocks should be lower than the shoulders, and your body should be extended in a single straight line head to heels.

Next, tighten your midsection and breathe in and out slowly. Hold this position for up to 60 seconds, then slowly lower your knees to the floor and lean back so that you’re sitting on your heels and rest.

Repeat the exercise for three times.

It surely sounds like a simple exercise, but it can be really difficult at first. Start slowly and gradually increase the intensity. The main goal is to be able to hold yourself in the position for 60 seconds.