Challenge Details Home Page workout 21 Warm up legs 2 min Split Squat 12 reps each legs x 3 setsRest 30 seconds in between sets Scissor Lunge 12 reps x 3 setsRest 30 seconds in between sets Scissor Lunge + Squat Combo 8 reps x 2 setsRest 30 seconds in between sets Weighted Step Ups 12 reps x 3 setsRest 30 seconds in between sets Crunches: 2 minutes x 2 setsRest 30 seconds in between sets