@BlackSheep, congratulations on your returns firstly.
I stake on whatever wallet/exchange my alts are stored on. I don't stake 99.9% (BTC) of my stash for fear of losing them if the exchange is compromised and because my general strategy is one of capital gain rather than income producing at the moment so nearly all of my holdings are in cold storage.
I've no experience with Coinbase.
As far as chronic pain goes I think CBD/THC is beneficial, I also think putting load on your body is beneficial ie hitting the tin in gym
with a program and I think stretching is a complete waste of time unless you enjoy the feeling it provides. My level of chronic pain in the past has not kept me sleepless mind you.