I find waiting for things physically exhausting. Waiting in lines, waiting sitting in a room, waiting on friends to decide what they want to eat, walking really slowly with an elderly relative: I find it all physically exhausting even though very little physical energy is required.
Yes, but it’s likely due to how we use our bodies in a manner that we don’t really like, partially because we’re on the alert for the waiting to end. Doing something you’ve chosen to do feels better.
Also, the environment plays a role. It feels more shit to pay a lot of attention to a shitty environment. Same thing as how walkable neighborhoods are usually interesting, while us-style car-brained areas feel like shit to walk or even just exist in, because you’re not actually meant to stay there long enough to notice anything.