Place your hands underneath your shoulders with your arms fully extended, palms flat and fingers facing forward. Keep your legs straight and knees off the floor. Bend your arms at your elbows, lowering your chest until it’s 5cm above the floor and your elbows reach 90 degrees. Keep your back and legs straight at all times, as if your body was a plank. Try not to bend or arch your upper or lower back as you push up. Push back up and repeat.