Place a band around both feet. Lie on your back with both legs out straight.
Bring the right knee in tight towards your chest pulling into the resistance band whilst keeping everything else still.
SLOWLY return the right leg to the start.
Do not let the lower back overarch. If needed you can place your hands flat under the curve of the back and apply gentle pressure downwards.
Complete 3-5 reps on each side for 2-3 sets.
Increase reps gradually when you feel able to (aiming eventually for 3 sets of 15 reps)