Chemo treatments and 5 weeks of radiation

Recently I was diagnosed with stage 3 breast cancer.
I was told that i would need a mastectomy, followed by 4 months of chemotherapy and 5 weeks of radiation. I am presently half way through my chemo.
You may wonder what this has to do with Tim Hortons. Well, here's the scoop. I started noticing that after I drank a Tim,s coffee - which I do almost every day - even if I'm too debilitated to get out, I will have a friend pick one up for me. Yes, it's great to have good friends - I feel better, not just a little better, but a whole lot better. This feeling doesn't last for a long time -2 to 3 hrs - but it's defiantly connected to the coffee, drinking. I don't know what you put in your beverage or where you purchase it from, all I know is it gives me some relief from my symptoms. Soooo, thank you Tim Hortons you are very appreciated in my present world
Sue