Answer:
miserable
Step-by-step explanation:
He surely isn't happy or bored. He was doing push ups and had one specific thing in mind: "I made a huge mistake". So he did something. It's not like he was prevented of achieving a goal. He made a choice and his choice put him in a situation where he was not allowed to move, had mosquitos over him and he could not thing of anything but the fact that he regrets being there.