Sleep and walking is something I need to do more of. Well, actually I get enough sleep. It is just not quality sleep. It is usually in spurts. Like 2-3 hours here and 2-3 hours there. Can never sleep 6-8 hours straight through. Haven't done that in a long time. Walking is just a matter of me getting off my lazy duff and down to my basement on the walking pad and doing it.
The heat is a major player and you can give yourself some grace with regard to its impact.