Another one of my favourites on the foam roller as it takes a little more co-ordination. This one is good to work those hamstrings.
Lying on your back on your mat put your foam roller under you feet. Stabilise your shoulders and inhale. Stabilise you pelvis and spine in neutral and the lift your hips up off the ground. Creating a bridge position from your shoulders to your knees. Inhale as you hold the position nice and balanced. Then as you exhale lower you hips back down towards the floor, inhale and then as you exhale repeat.
Repeat 5 times.