This is a really gruelling workout as if you’re willing to push yourself (which you should be!) Tracy advises you to work your way up to 80 reps. The leg section is quite difficult, particularly as Tracy as demonstrates each movement as being quite slowly executed. The last 3 abs moves are also difficult and you’ll probably feel this in your lower back and hips while you work up to being strong enough to complete all the reps. The arms movements themselves aren’t too hard, it’s just difficult doing 80 reps of each move in succession.