1. Start in parallel; your supporting leg with the knee bent strongly anchored in the floor, the other leg (the working leg) is raised in front of you with your knee bent and foot pointed.
2. Keep your tummy held in and shoulders relaxed, with both hands on your hips.
3. Alternate raising your leg in front of you (a knee lift) and pushing it back behind you (a glute press). Repeat 30 times each side.