Theres actually a lot at the gym you can’t do at home. Any barbell movement (big stick with weights on the end) you can’t do unless you have one at home, all the cardio machines, workout classes, cable machines, etc. I enjoy my gym time because I’m able to get a better workout at the gym compared to anywhere else. You can basically where anything to a gym. If you’re doing upper body, just make sure you have a loose fitting shirt on, if youre doing lower body have loose fitting pants on. Gym time is what you make it. If you find one thing fun, you’re allowed to just do that.
Mint is a great distro to choose for initially switching. The difference between using mint and raspian is that mint has a lot more GUIs for setting, packages, etc. Don’t make the mistake I did and make sure you use those for peace of mind. You can always do a live boot to see if any software you want to use actually works on your system running mint. Also, make sure you back up every important file before messing with any of this.