Why do I wake up at 3am?

Sometimes you are awake at 3am because you are worrying about things, for example if i have and essay thats gotta be in I would worry about it constantly and end up still awake worrying about it and then get going on it. I wonder why I am so knackered

Yes that happens me too.. I wake briefly after having rested from about 10 or 11 pm.. Can't say I know the reason except maybe the body is a bit bored of sleeping?

3 am is the deepest hour when you fall asleep. It can be that you need more rest during the day. Constant restless movement can cause tour body to be uncomfortable and wake you up at 3 am.

For many people it is because that's the time when adrenal glands levels can be high enough and wake you up as if it is a new day.

I started waking up so that I could start going to the gym, to help improve my physical body and boost my own self esteem. I've found that over time this new me has spread into others and generating positive energy in them. I'm a firm believer that your physical body and mental are connected and they bounce off each other in healthiness and attitude towards life and people.

the time depends on when you took your last drink, how much you drank, your metabolic rate, and other factors, but the basic idea is that the Alcohol wears off and your sleep is disputed.

It might be for different reasons, related to either physical or mental health. Maybe you've been dealing with a lot of stress or anxiety? In that case, try Mood Boosts here on 7 cups - personally I have found them really helpful!

A quiet morning time when no-one else around is pretty awesome! It can be calming sometimes being the only one awake, it's nice to have a little "me" time in the peace and tranquillity of your own company sometimes ^_^

I'm not sure. Do you live in a house or an apartment? Is there a train that passes by, or a neighbor who leaves for work at that time? Does anything in your home turn on or off at 3 am? Does your bedtime change or remain consistent? Have you tried experimenting with a different bedtime? For example, if you go to bed at 12 and wake up at 3, and you start going to bed at 1, will that cause you to wake up at 4? Or would you still wake up at 3 am? if you can, try to collect data on yourself, keep a journal to see if your body/mind is waking up after a certain number of hours, or if it's specifically at a certain time. If it's the same clock-time every night then there might be something in your external environment that is waking you up. If you tend to wake up after only sleeping a certain number of hours, then it could be something internal (stress, biological, circadian rhythm, hormonal, breathing, etc).

There can be many reasons but ill answer with my personal experience. Leaving the television on and drinking lots of water does not help. Cheers :) I would consult a doctor if the problem persists.