To stay healthy, you need to communicate with someone. Working from home removes the small talk that is part of a day in the office, and starting a video meeting is like going into a meeting room: The setting limits off-topic conversation.
If you live with someone, make sure to create time for conversation and don’t just spend the evening slumped in the sofa with a screen each. If you live alone, call someone on the phone for a chat. Again, video feels like a meeting. Just use an old-fashioned voice call. You can even call people while you take a walk and do two good things for yourself at the same time.