Nick the effects of not exercising can be hard on the body. My initial early recovery I was chair bound most of the time, it was devastating to my body. It has taken two months of physical therapy to correct the effects of both my injury and the effects of all that sedate rest. IMO light and mild would be best if you are still struggling. I really feel for you as I have watched your many posts and struggles. On an upside your posts are more articulate and have excellent structure so your language skills are showing improvement.

Hope you feel better.