Something to note is that depending on where you live, people can still go outside. They just need to stay away from people. If you live in a suburban or rural environment odds are there are at least walking paths nearby. Go on a walk, run, or bike ride. Nothing in those activities requires interacting with others as long as you keep a mind to keep your distance and they do wonders for keeping the cabin fever at bay.

Not meaning to rant, just something I wanted to get off my chest since people keep talking about being trapped indoors when practising social distancing (not quarantine. people under quarantine need to stay as isolated as possible).