The Russian twist is a powerhouse core exercise, perfect for slotting into your workout routine at the end of a strength training session or home workout. However, many people try it once and then never again after feeling a pinch in their lower back or feeling like it's doing nothing at all.
Once you get it right, it's one of the best functional core exercises, working the abdominals and obliques in a way that builds "rotational core strength" and directly translates to everyday life, says Mark Harris, a level 4 personal trainer and Mirafit ambassador.