The internet loves to coin a trendy new fitness challenge—12-3-30, 75 Hard, 3-2-1, the list goes on. And while some workout methods are more fluff than facts, others are rooted in real exercise ...
There's no shortage of TikTok fitness challenges involving numbers that people have been loving lately – the 3-2-1 method, the 12-3-30 workout, the 25-7-2 Stairmaster workout – you get the idea. The ...