And, lastly, I consider an exercise advanced if it places high levels of stress on the joints of the lower back. (ab-core-and-stomach-exercises.com)
The Whole Flip 4 - DVD set comes with a DVD dedicated entirely to supporting range of motion, and strengthening muscles surrounding joints to reduce stress on the joints. (flippingfifty.com)
When you drop those extra pounds, you'll put less stress on your joints. (webmd.com)