Fitness

In maintaining weight loss, the most important validation metric shifts from the scale to the calendar. Getting beyond that first year seems key, and my next goal was to pass 2, 3, and 5 years.

With each passing year, things come up that teach us things. But we're also giving our bodies good time so that homeostasis helps us instead of dragging is back to our old weight. As we will always live in an obeseogenic environment, this will take effort along with homeostasis to maintain.

and also packed on a lot of muscle

As long as you can articulate why to maintain that, then no problem. The bigger point is to have and enjoy the good life and a healthy and fit body is our platform for doing just that now and in the future. It also can be our hobby and that PART we can lose passion for over time. We still need to do some of this stuff for good health. Maintain is a verb, verbs are action words. We can't stop it entirely and expect our health to stay good if we are neglecting it entirely.

Scale back if you decide to, but not to zero. You'll lose some muscle but not muscle that you actually use.