Linda (left) holds Jonathan's ankles and uses his body weight as load for her squat. This plank is better and more fun than a static plank because it moves!

When you are up, your partner is down. The smile is all you need to see. Mukul reaches high while his partner Zak reaches low. They high-5 each other on the way up and down

Linda (right) is the boat, Jonathan (left) is the skier. All you need are some sliders and some strength.