Variation of the most popular exercise for the muscle definition of your abs.
Sit down on the end of an incline bench and fix your legs under the rollers.
Place your arms behind your head or cross them on top of your chest.
As you inhale, arch your back, stretching your abs muscles.
Keep your neck stationary.
As you reach maximum contraction, while exhaling, lift up the upper body as if you are crunching inside trying to bring your shoulders closer to your waist.
Don't move your shoulders.
Pause at the top to feel the maximum stretch of the abs and slowly return to the starting position.
The higher the bench incline, the harder it will be to do the exercise. Start with 20 degrees.
To increase the difficulty, you can take a weight, for example, a barbell plate.
To keep your neck stationary, imagine that you are holding a small ball with your chin.