[TJ Jackson]

How does Alice Lichtenstein know that Michelle keeps her weight constant and exercises regularly?

[blackdog]

"She has kept her weight constant and engages in regular physical activity. An occasional indulgence is fine. For many people, that is what helps them keep on track most of the time."

The first couple fly their physical trainer from Chicago to the Whitehouse and back several times per week in order to get their exercise. He flies on a private jet.