Everyone is different but I was miserable and had a hard time with no signs of improvement until 2 weeks after radiation, then and now it is a very slow process. I have a desk job and I worked part time except the last week of radiation which I took off. Week 2 after radiation I went back full time but I have to tell you my full time is 20-30 hours a week (I am paid by production not hours). The hardest part for me so far is the food. I am slowly working my way back up but it is OOOO so slow, I want so badly to be able to sustain myself without liquid nutrition or the PEG tube. Yesterday slightly 4 weeks after treatment end I ate half a hamburger and half a piece of pizza among other more healthy choices. Everyone is different, some heal slower and some faster, this is just my experience so far.