I had radiation for 15 days, I did feel a little tired in the afternoon during the end of the treatment. After each treatment I used a lotion that was recommended by radiologist. I did end up getting an infection and also needed a prescription cream to help the skin heal. I do have sensitive skin. My treatment was during summer( I live in Texas) and my skin DID NOT like the heat. I did end up being fatigued. acupuncture and healthy yoga greatly helped!
Everyone is different. Good luck!