Side leg extensions ( fire hydrants )

Muscles worked

You need

How to do it

1. Start on all fours with your hands under your shoulders and your knees under your hips.
2. Lift one knee out to the side, keeping it bent, then extend the leg straight out until it's in line with your hip before bending it back in and lowering.
3. Yes, the starting lift looks like the move's other name suggests - a dog at a fire hydrant - and no one has ever come up with a better description.
4. Keep both hands planted and your torso square to the floor, complete your reps, then switch legs.