@athoub I didn't realize you where a liver transplant till I read more of your post . @rosemarya can sure help you with that but your body will tell you when you have had enough . I teach a sr. chair exercise where I live and that's the first thing I tell people listen to your body when tired ,quit or you'll have problems. So just do what you can start slowly and build up . I'll still see you on the virtual trail I don't walk everyday but try to at least 4 days a week .