How many hours do you sleep in a day and how sleeping actually feels?
During summer I am totally fine with 7 hours of sleep. But now in Winter it's crazy, I sleep 8 hours, wake up and see it's still dark outside and I feel tired. Not sure if it is because of the Summer/Winter time changes.
Winter are always such only where you feel more sleepy than summer. Due to climate, people want to remain in their cosy quilt and not come out of it. Thus sleeping in winter is for long hours as compared to summer.