When the alarm rings in the morning, and it's still pitch dark and cold outside, many of us find it hard to get out of bed. The long winter months can make us feel weary, and staying energised might be more difficult. Factors such as temperature, and the amount of light we receive during the day in this season may play an important role.
This is a companion discussion topic for the original article at https://patient.info/news-and-features/do-you-need-more-sleep-when-its-cold