Once your fitness level permits you to achieve 3 sets of this circuit with a 5 minute
cross-trainer break in between sets, the workout will take approximately 35 - 40 minutes. You can then finish off with 3 sets of stomach crunches and back extensions to work your mid section. As your strength improves, remember to reduce the assisted weight until you can perform at least 10 repetitions unassisted. I have successfully used this workout in my weekly routine achieving 3 sets of 10 repetitions (unassisted) with a 5 minute cross-trainer break in between sets within 4 weeks starting from a deconditioned state.