One of them is the 3-3-3 method, popularised by coach Gary Walker. ‘The truth is, you don’t need more weight to build muscle after 50,’ Walker says. ‘You need more tension, and a smarter way of ...

High-rep training typically refers to sets of 12 reps or more. For a long time, it’s been pigeonholed as the go-to method for boosting muscular endurance, but a growing number of fitness professionals ...