I don't know why a pandemic has brought out the judgey people (never mind all the conspiracy theorists in my town), but here they are. There is a smug meme going around proclaiming that if you don't come out of this stay at home order with a new skill or more knowledge, you're just lazy.
Oh, shut up. First of all, a lot of us are still working. Many of us are essential workers. Some are parents trying to home school their kids. Most of the people who are laid off are worried about making ends meet or when they can open up their business again. Nobody needs to hear that they are lazy for doing the best they can.
This is an unprecedented situation. I personally think that whatever people can find to do right now, as long as it isn't illegal, unethical or immoral, is all right. Work out a lot, or take a break. Feel free to ignore all those "home workouts" that people keep posting; most of them aren't certified trainers and I think we all know what a squat is. Hike if you can: follow social distancing and please be prepared; now isn't the time to put rescuers at risk. Try to eat well, but if sometimes you eat more candy than normal, don't beat yourself up.
It's not selfish to mourn trips you can't take, or events you have to postpone. It's all right not to miss the gym, or to be relieved that you have more time alone. If that work project takes a little longer than it would have two months ago, give yourself some slack.
I'm not learning a new skill. My house is only marginally cleaner than when I worked all day in an office. I still eat too much chocolate. But I go trail running in the woods by my house and lift some dumbbells. When it warms up a little I'll work in my yard. I message my hiking friends to make sure they are ok. I'm reading books. My cats are happy that I'm home more. And that's enough.