Your techs will walk you through it, it isn’t hard. They will tell you when to hold and when to breathe. Just like with a chest x ray. You will be amazed once you are into this, there is nothing to it. It took me longer to get undressed and dressed again than it did for the actual treatment.
Your techs are your allies in radiation. If there is anything you don’t understand or if you start to have side effects, tell the techs. They are a direct line to your radiation doctor, and in many cases have a better idea because they see the patients doing it every day, the doctor typically sees them once a week.
Will you come back and tell me how you are doing after?

You can do it! And remember, if you can’t do it the first time, you’ll just have to do it anyway! lol! Maybe some deep breathing exercises will help. Good luck!

Do a search for YouTube videos. Breathing during radiation. The first day I had terrible trouble with the breathing. So I went online. There are videos put out by at least 3 hospitals. I watched one with a male doc. Concentrate on pulling breath into your stomach. They put that belt/test thing on your tummy to monitor breaths. The belly button seemed to be a good spot for me. I concentrated on making my stomach rise and I also learned to press my tongue against the roof of my mouth closing the throat. (Keeps the air in) If at first you have to take a breath during a sweep, don't worry. The machine stops and then continues after you take another breath. You'll get it and be fine. Then the appts go faster. But the video was a tremendous help to me.