I did this in June, 39h/week on trucks. Paradoxically I was pumped by this because having regular activity and financial safety freed me from a ton of issues. So much that during lunch pause I was doing pushups and before bedtime I'd learn Django to make an application for this job. Unfortunately the boss did me wrong so I quit.

To babble a bit more: in August I tried taking a part time morning delivery gig (4-8m 24h/week) thinking it would feel the same but not at all (newspaper delivery is physically stressful), so I quit drained after a month, even though it required no effort and was less time per week than the truck thing.

Right now I have a 30h/week food delivery gig, it's just right to keep me active and the rest of the day I'm writing vue code now.

I may try to find something that would make my body more fit. Maybe having a woodworking shop or something similar.