@fullspinzoo Some good information. Disagree with the hip flexor part. You will not develop hip flexor strength from this, certainly not to the point where it affects your lumbar spine. There are too many muscle groups involved for that to happen and not enough direct resistance to the hip flexors. It's technically a total body exercise. I've never seen anyone with over developed hip flexors that's caused from exercise. It's usually just tightness related to daily activities like a desk job. Even if that's the cause they're usually still weak if you were to do a MMT.
