When you lose weight, your body not only consumes your fat (and glycogen) for energy, it consumes protein as well -- including the skin your body no longer needs as you lose weight. But if you lose weight *rapidly* your body doesn't consume this protein sufficiently to avoid lose skin. Besides slower weight loss (and I've yet to read an article suggesting that rapid weight loss is necessary), you can add muscle building to your regimen.
Palo Alto resident and dog owner looking for a walking and exercise partner (with two legs).
103 Days since: Days since re-starting low carb