Hi David,
You are living proof that not every health professional has any idea what they are saying. Great result for you and no question that exercise is a key factor in recovery - awesome effort! I'm a regular bike rider and am slowly increasing my time- radiation was exhausting as was the chemo and I still have a peg tube in- very uncomfortable. We are travelling to Europe in August this year and I look forward to being fit and well for it
Kind regards
Penny