Maybe, but it feels good to move the body. Too much rest and I guarantee anyone will feel like garbage. The body also starts to tell you, with chronic pain and tightness and lower energy that your total lack of fitness makes you feel terrible.

Some people exist in this state for so long they don't even know there's an alternative.

We have a body. It feels great to push it and use it to lift heavy stuff. Try it out, but don't go overboard at first. That's where most people go wrong, especially when they've energy-minimized themselves to a state approaching a dried prune.