Fat experiences

Not really, but my default build is along the lines of most linebackers. Its covered by a lot of fat but I'm still fairly strong. I've probably lost a little but not near the drop in dexterity and mobility.

Feeder does not always mean sedentary -- although sure, many people associate them.

But yes, lots o f people discover that being sedentary leads to being weaker and less fit; this is no secret.