Well, I got my binders today

When I opened the package, I was a bit shocked tbh. They looked so small and I was wondering if I even got the right size (extra small, I'm a tiny person).
After much...struggle of getting the sucker on, I'm starting to more or less get used to it. I'm just lounging/walking around, taking deep breaths. Just..you know, wearing it in. It looks a bit...off when I am shirtless because I have somewhat of a gut. Not a lot but enough to bother me.
Question time:
Can binders be worn while working out? I go to the gym twice a week. I don't mind not wearing them BUT I have a feeling this is a right pain in the butt to get out of and I'm a "get up and go" type of person. So the less time doing something, the better.
How have you adjusted to these? Are they supposed to be this annoying or did I get the size too small?