Ask any XC coach what happens if you go intense before building a foundation
You have to get people fit enough to train, before you train
Most lay people aren't
Stop using HIIT as if it's Pert Plus, the best of both worlds. It isn't
Ask any XC coach what happens if you go intense before building a foundation
You have to get people fit enough to train, before you train
Most lay people aren't
Stop using HIIT as if it's Pert Plus, the best of both worlds. It isn't
Which is it?
Which is it?