boy-positive little story that may be relevant:
So I play ice hockey. As you probably know, this sport requires chest pads. They velcro from the back and attach in the front. I used to like to have my chest pads reeeeally tight. Then one day, in the middle of a exhausting practice, I started to feel super sick out of nowhere and I could barely breathe. I had to sit on the bench. One of the instructors said he didn’t like the color my face was turning. Per his suggestion, I took off my chest pads and suddenly, the nausea disappeared.This has given me a lesson relevant to your blog:
Now I don’t know what binding feels like since I’m not trans, but like I said before, remove your binder if you feel sick while exercising. Better yet, simply don’t wear it while running around, especially outside. Wear a sports bra instead, or maybe wear a baggy sweatshirt (weather permitting). If you’re only exercising for an hour, or so, it’s worth it to not bind for the short time. Always listen to your body. Anything that constricts that part of your body, from tight chest pads to binders, can be dangerous. Obviously, it’s near your heart, but it’s also near your diaphragm, which is your breathing muscles. Just stay safe and be smart about it.