Author's Note: Written while tired. Sorry there's not more.
Beca Mitchell is acutely aware of relativity. She may not be completely knowledgeable of its inner workings, but she knows what it feels like. Being tired, waiting, has given her intimate knowledge of what the passing of time feels like. Normally, she wouldn't notice anything, the time would just go wherever it does. Slipping, slipping, slipping into the future as Steve Miller would say. She has her father and Jesse to thank for knowing that. Regardless, when she gets tired, when all she wants to do is sleep, time slows down to an excruciating crawl. But sleep isn't an option. Well, it is, but she doesn't want it to be. She wants to hold out to see her. Beca likes it when the last thing she sees before falling asleep is her. It's one of her most favorite things ever. It's all worth it, when she sees her smile, when she looks deep into her own eyes. Those are the moments worth living for. Those are the moments she tries her hardest to stay awake for. The ones that impart the secrets of relativity to her.