Sleep is very important. Some of us whine right before we go to sleep because we aren't tired. Your body says that but your mind says "no". Then when we wake up we don't want to. We just want to stay in bed, which is the opposite of what you felt last night. This is perfectly normal, everyone experiences it.
Here is a little scenario most of us have gone through. Enjoy!
Walking up the stairs to my bedroom I am not tired, but that isn't in my dad's vocabulary. Reluctantly, I put on my pajamas and plop onto my warm, comfy bed. I reach out my hand to turn my alarm on. Then I put my cozy blanket over me. Ten minutes later after continuous tossing and turning to get in the right position I am off into a deep sleep. While sleeping I go into a world where anything is possible, the world of dreams.