Jumping in with a quick observation (anecdotal personal experience) on maintenance and activity.
Bgnd: 52 yrs old, ht 5' 7", mesomorph-endo (47" chest, 33" waist, 38" hips), max wt ever 220#, working out since 2000 and a former "starve yourself lean" dieter vs a low carb, higher fat & protein...