This is the 5807th most frequent Japanese word.
はやく
"はやく" means "quickly" or "early."
This sentence uses '早く' to indicate speed or promptness in waking up.
早く起きてください。
Please wake up early.
Here, '早く' is used to express the act of running quickly.
早く走ると疲れる。
Running fast makes you tired.
In this context, '早く' denotes completing the work in lesser time, emphasizing the result of it being done sooner.