This strengthens the core muscles involved in “anti-extension” – ie, any movement that resists extending the lower back – which applies to anyone who works at a desk. It uses all your abdominal muscles, but also works the legs, glutes (your bum) and shoulders. a) Starting from a kneeling position, come into a forearm plank position; bend your elbows so they are parallel with the floor, and turn your palms flat against it. c) Push your elbows and palms into the floor, so your shoulder blades open up. e) Imagine that you are pulling your feet towards your elbows and your elbows towards your feet.

Source: The Guardian June 11, 2021 15:00 UTC