I agree walking if you can daily is very helpful .I did not have chemo just surgery and radiotherapy but am on hormone therapy now and it seems to be helping with joint pain and also bouts of the blues. I start out stiff and with hip/ ankle/ knee/ back pain and generally after 15minutes/ so I seem to have walked thru it.I listen to music on my phone when I walk and drift off thinking of other things so don’t really notice the exercise.It also is my time when I just have to be and not do/ say/be anything for anyone else which is hard with a family to find that space. I had a few breaks from walking over Christmas and really noticed the difference to my well being.