Waking up too early. Could it be hunger?

francesca_c123456789

So I lost a good amount of weight and changed my lifestyle about 1 1/2 years ago. Over time I went from sleeping in until noon to not being able to sleep past 8am. I have just started uni and I have to wake at 7am but I have been waking at 5am and can't see to get back to sleep. I have noticed sometimes that when I wake at 7am I am very alert and ready to get up but then I have breakfast and I could fall back to sleep. Do you think I could be waking up early because