Some mornings it feels like the side of the bed on which you woke up is full of thorns and decaf coffee. Wrong, wrong, wrong.

According to a recent survey conducted by Sealy UK, there really may be a “wrong” side of the bed. The survey results suggest that those who usually get out of the left side of bed were four percent more likely to be in a good mood in the morning, eight percent more likely to like their job, 9.5 percent more likely to have a positive outlook on life and eight percent more likely to have a lot of good friends compared to those who exit the bed on the right.

The survey, which queried 1,000 people from across the United Kingdom, was commissioned by Sealy to better understand the factors that can contribute to becoming a “deeper sleeper,” according to a press release. More research needs to be done to look into the reasons why left is right, but in the meantime, if you’re one of the one in 10 couples who argue about who gets to sleep on which side, you might want to hide this news from your partner