Lie on your front and lift yourself up into a plank position.
Your forearms should be on the floor with your elbows under your shoulders, and your toes should be tucked under.
You should endeavour to hold a straight line from the tip of your head to your heels.
Hold this position as you bend one knee, then extend this hip, pushing your foot up towards the ceiling.
Keep a hips width gap between your legs.
Lower this leg back to the plank position, and repeat.
