90/90 Hip Rolls are a great exercise to warm up the hip muscles and improve mobility around the hip socket. It specifically targets the glutes, piriformis, psoas, hip flexors, hip abductors, and adductors. This is a quick and simple exercise to do before weights or a run, especially if you've been sitting down at a desk all day.

Begin by sitting on the ground with your knees bent and shoulder width apart. Lean back and place your arms behind you to provide support. Internally rotate one knee towards you whilst the other knee rotates out. Switch sides and keep alternating. The further away your feet are from your body, the easier this exercise will be.