Leg circles

Muscles worked

You need

How to do it

1. Lie on your back with your arms along your sides and raise both legs together to about 45 degrees.
2. Keeping your legs straight and glued to each other, draw slow, even circles in the air with your feet, first in one direction, then the other.
3. Your legs are just the pencil - your abs do the drawing by keeping your lower back pressed into the floor the whole time.