Ok, fine, your workout routine right now might consist of opening the fridge thirty times a day. That’s fair. It’s hard to get motivated to exercise during a pandemic.
But you might be trapped in thinking that a) I am feeling crappy because I am not exercising but b) exercising makes me feel crappy. It’s a dilemma.
I think this article can help you out of the dilemma: Maybe You’d Exercise More If It Didn’t Feel So Crappy in FiveThirtyEight
I’d rather you read it then summarize it. I will say that one way to get out of the rut you are in is to reconsider what you are exercising for. You may have high goals, and if so, great. But if your goals are: “feel better” then there are plenty of ways to exert yourself (i.e. exercise) that are not crappy. A good long walk (preferably with a destination, at least for me), a bicycle ride, or running around the park with your dog (don’t just stand there) can all work. Stretching daily as a way to break from work is useful. Go to the dollar store and get a jump rope and get outside and skip again. Grab a garbage bag and go pick up some litter (I saw someone on twitter doing this). Do some woodworking or do a lot of batch baking (if you haven’t been exercising, you will find this tiring). Plenty of ways of being active. Or do things like the article says: start off hard into your exercise routine but gradually make it easier and easier.
Most importantly, find an easy way to track it so you stick with it. You will likely find yourself feeling better, or at least less crappy.