We are not stuck immobile, killing time, while we wait for transport. There are things to do, and we cannot simply remain seated. We have life to live while we wait for the age to come. Advent waiting is active waiting. Active waiting is not the same as fidgeting.
Some children thrash and yell.
Others pick and fidget. All these children are full of nervous energy that accomplishes nothing except exhaustion. Some parts of life, even those that lead to health, are painful. But the only way around these difficult parts is through them. Advent waiting can be like labor pains.