Feeling average and unhappy lately? You're not the only one and here's why ...

Have you been feeling a little down lately? A bit sad? A little low on energy?

Well, it turns out, you're not crazy and there are many others feeling the same way due to Seasonal Affected Disorder!

Two years ago, a Melbourne-based Facebook user asked the question surrounding why we don't feel quite right at this time of year. It went viral after many others claimed they feel the same.

Turns out, we're probably trying to hibernate.

Olivia Duval reminds people that "it suddenly got a lot darker and colder recently". Some people's bodies may not have adjusted to the new season as quickly as they could have.

Her post shed some light on SAD (Seasonal Affected Disorder) and resonated with many people who commented and shared the status update.

Seasonal affective disorder (SAD) is a type of depression that's related to changes in seasons — SAD begins and ends at the same time every year. If you're like most people with SAD, your symptoms start in autumn and continue into the winter months, sapping your energy and making you feel moody. Less often, SAD causes depression in the spring or early summer.

"Look at getting some vitamin D back in your system," Duval advises.

Her tips also include checking that you have appropriate bedding for the cooler temperatures (but also breathable bedding so your body does not overheat), drinking lots of water and staying in touch with friends during this "hibernation" period.

"You're allowed to go into screensaver mode sometimes," Duval wrote for those needing a reminder to slow down and take better care of themselves.

"Plenty of creatures on this planet gear down over winter, and many mammals just go to bed permanently for a whole season, or go halfway around the globe to get the hell away from the cold."

Interesting!