Avoid: Good Mornings
This exercise is gaining popularity because it works the back, glutes, hamstrings and hips. But it doesn't come without issues, Neff advised.
Why you shouldn't do it: The reason good mornings (shown here without a barbell) are not the best for your body is because they can compress the spine and also put a lot of pressure on the lower back. Many people will overload the amount of weight they can safely do, increasing pain and the potential for injury.