In my twenties and thirties, this was plenty to keep my weight under perfect control. Didn't think anything about it, and had my occasional slice of chocolate layer cake.
Suddenly in my forties the weight happened, a pound or two a year. It was almost twenty pounds I had to lose. Tried several things, found that facing a life being always a little hungry was most discouraging. Add to that--I loved to cook and bake.
When I was thirty, I didn't know what all the fuss was about because it wasn't a problem.
We can't all be Jack Lalanes, but we can all exercise within our power. It all starts with getting off our butts and getting moving.