Ever keen to refresh our exercise routines, we love exploring new workout trends here at MC UK. But, if a trend isn't realistic, attainable, or easy to maintain, then it's probably not going to be one for us (75 Hard challenge, we're looking at you).
Safe to say that when we spotted the 4-2-1 method doing the rounds on our favourite social platforms, we were eager to learn more. So, do PTs recommend the newly trending workout plan, or would they be quick to dismiss it as a fad?
