
Lie on your back with your knees bent and soles of your feet on the floor.
Engage your abs and imagine your navel drawing in toward your spine as you continue to breathe.
Squeeze your glutes while pressing your lower back into the floor. Be sure to roll your pelvis toward your head rather than your feet.
Next, do the knee tucks. For this, keep your knees bent and lift one leg off the floor. Hold it for about 6 seconds and drop it down while keeping your knees bent.
Then lift your other leg, hold it for another 6 seconds and lower while still keeping your knees bent.
Keep repeating and switching between both legs like you are marching.
Aim for at least 8 to 12 times.