Useful Gym Machines for Stronger Glutes and Back

The folks at US News & World Report asked me which machines in the gym are best for women who are intimidated by free weights and barbells. Obviously I encourage everyone (men and women) to include safe, effective resistance training into their fitness programs, but totally understand that it may take time (and assistance) to build up to that. So in the meantime, checkout slides 3 and 4 for my top picks.