Lie on your back on a mat
Place your hands under your hips or at your sides
Press your lower back into the floor
Lift your head, shoulders, and feet slightly off the ground
Keep your legs straight or slightly bent
Kick one leg up while lowering the other
Alternate the legs in a quick, controlled motion
Keep your core tight throughout the movement
Keep your lower back from arching
Breathe steadily during the exercise
Continue for the desired number of reps or time
Lower your head and legs to rest when finished