It’s that time of year again. When the clock strikes 2 a.m., it actually strikes 1 a.m. After clocks were set forward an hour to begin daylight saving, they are turning back an hour. While the switching of the clock may earn you an extra hour of sleep, studies by Harvard Medical School and John Hopkins have found that daylight saving can actually have some costly mental health effects.

It’s officially that time of year when you can start to feel the daylight to be lasting just a little bit longer than usual.