How do I hide my chest when playing cricket?

I wore a binder when I played hockey and I was fine. As long as it fits correctly and isn't causing you pain or shortness of breath it should be safe to bind while playing. You could buy one in the next size up if you're worried. Maybe give yourself a break once you get home.

Im going to be so honest here- you can technically bind when exercising, the biggest thing is listen to your body

If your ribs or chest hurt AT ALL then youll want to stop IMMEDIATELY, but everyones body varies so it might be worth it to try out binding while exercising at home, or going for a walk etc just to check in on how it feels and your bodies signals. You can also try alternate methods, such as tape AND a binder thats a size up.

Personally, i was able to bind consistently for 10-16 hours a day while working a very physically demanding job in high temperatures for three years without any significant health problems until the last 6 mo-year.

I have a friend who had to wear a sports bra for a jog because he would have chest pain pretty quickly.

It really can vary, and while a general rule of thumb is to not bind while exercising, it is possible to do safely if necessary, but you really need to listen to your body and have a contingency plan in case you have to take it off in a pinch. Always bring a backup sports bra or something in your bag.

Could you try tape under a sports bra so that everything stays in place? Additionally, you could wear a light long sleeve shirt under a normal t shirt and claim it’s for sun protection.