I want to stay up late
Why do you want to stay up late?
I want to go to the gym and watch sports
I agree that there's not enough time in the day, but these activities can always wait until later when you actually have free time in the day. Sleep is something you can't ever get back, and the lack of it can ruin your health.
No, I will do it tomorrow night.
I think if going to the gym is that important to you, you will sacrifice something less important than sleep in order to do it. Look at your schedule and see what you can cut out.