Exercises Your Trainer Doesn't Want You to Do

Go for a deadlift because it will work the exact same muscles as good mornings, except you won't be risking your lower back (if you do them correctly). If you've never tried a deadlift before, be sure to start with an empty bar. This will not only give you a warm-up, but it will give you the feel for the exercise and make you more comfortable in doing them.