Y-superman

Lie with your chest down on a mat, with your legs straight and your arms outstretched in front of you in the shape of the letter “Y”.

Squeeze your back and glutes and lift your chest and arms off the floor, keeping the Y-shape formed by your arms. Keep your feet on the ground.

Hold the position for a second, then turn back to the starting position.
Repeat for the recommended number of repetitions.