[throwaway6041]

> being in shape used to (usually) demonstrate discipline.

Putting on weight may demonstrate a lack of discipline or awareness, but those losing weight should not be treated as only undisciplined. Scientific research shows that obesity changes the body in ways that actively work against you when you decide to lose weight. You may be able to loose the first pounds with "discipline", but it becomes increasingly harder the more you lose. Once you have lost a few pounds, the body actively works against you to get back to what it thinks should be the baseline.