Lying on your side, stagger your feet so one foot is slightly in front of the other.
Place your right palm onto the floor underneath your shoulder – distributing weight evenly between all of your fingers.
Push up into a side plank until your arm is straight. For the most advanced variation, stack one foot on top of the other. Alternatively, you can bend the bottom leg so the knee rests on the floor while keeping the top leg straight and off of the ground.
Your other hand can either rest on your hips or reach up toward the ceiling.
As you hold, actively lift your obliques towards the ceiling, making sure that your chest is open and shoulders are back.

Hold for 60 seconds each side

Strength training: hold plank for longer with these 3 core-strengthening moves