You're using up calories all the time as long as you're still alive. But the amount of calories used up by the hour depends on how active you are. Standing isn't particularly strenuous, so it might...
As a form of punishment for the rebellion against the North; southerners were requireed to stand everytime an American Flag passes them by.
Most birds are capable of sleeping standing up.
Horses eat standing up, so do cows, llamas and most other herbivores. Humans can also eat standing up, but most of us prefer to eat sitting down.
stasibasiphobia or stasiphobia