(never exercised and ate whatever I wanted, but did lead an active lifestyle)
In my 30s, I gained about 20lbs, which really just brought me up to a weight
most guidelines consider normal for
In my 40s, I've gained another 20lbs, and it's time to act.
The thing is, the weight just won't come off.
When I was 97lbs and in my 20s, if I ever felt my belly was a bit puffy, I'd just do 20 sit-ups, and be perfectly flat again. I have never dieted.