----- Original Message ----- From: <[log in to unmask]> But energy has been good and I am close to my pre-diet performance levels now having run a 23:58 (7:45/mile) 5K with relative ease yesterday morning. Jim, I'm at a loss to understand the running. Why pound your bones into the ground? I'm not so sure this is a good thing. I think paleo man didn't run unless he HAD to. The wear and tear on ligaments, tendons, joints, bones will catch up to you. Lifting is more advantageous for bone maintenance and lipid profiles in my own experience. Oliva, who loathes cardio.