Stand up straight with a resistance band tied to one side around waist height.
Hold the ends of the resistance band in both hands with your arms fully straightened in front of you.
Step your feet slightly wider than hip-distance apart and ensure you are far enough away from the band that there is some tension.
Keeping your body facing directly ahead, push your hips back behind you, and bend your knees down into a squat.
Control the movement against the pull of the band by ensuring your knees, hips and shoulders remain directly ahead.
Drive through your heels to stand up.
Repeat, ensuring you keep your arms straight and your body facing ahead.