Lie on your back with your feet flat on the floor at roughly shoulder width apart and position your arms by your sides for stability. Your knees should be bent at approximately 45 degrees.
Start by pushing through your heels, squeezing your glutes and core to raise your hips upwards. Lift until your body makes a straight line from the knees through to the hips and shoulders. Hold briefly, then slowly lower the hips down until your glutes touch the floor. Keep your glutes and core activated throughout the movement. Repeat for the desired amount of repetitions.
Avoid raising the hips too far where you hyperextend your lower back.