Pretty much whenever its not cold in the house, and it is unfortunately cold most of the time (fucking insulation is shit). I had to teach myself to sleep in clothes because i kept getting colds, i still hate sleeping dressed, and go commando whenever possible, because it allows my skin to breathe during sleep.
Asata wrote...
Everything.
...I'm mostly nude when I'm just hanging around my house, so that includes the vast majority of regular every day things, except for something like driving.
Then walk or take a bus.