I have just finished radiation (25sessions). I was a little fatigued..but no too bad...still able to get out and about as normal Badly burnt across my chest and under my arms..but have dressings to put on the burns..and they will heal. I didn't start to burn though until towards the end of treatment. My sessions lasted about 20 minutes..but I had to have both sides of my chest done. (Cancer in both breasts).Found all the staff lovely and very supportive throughout my treatment. Basically you lie down...arms above your head...told to stay still...the staff adjust the machine to your individual 'mapping' ...they leave the room... commence radiation (which only takes a few minutes ) and your done!! None of the terrible side effects of Chemo.Hope this is a help. Good luck tomorrow. Let's know how you are going. Chris.x