few movements are as suited to building mountain legs as the humble box step-up. The CrossFit Hero WOD ‘Chad’, which challenges you to do 1,000 reps of weighted step-ups, was used by Chad ...

But when overdone (or if you overwatch your favorite movie), it can get stale, so it’s worth experimenting with all types of squats ... two feet in front of a box or step and extend right ...