According to new research conducted by Ryerson University, between 30 and 40 percent of couples don’t sleep in the same bed at night.

The study further found that couples were being woken up by each other.

“People will say they sleep better [together], but when we actually monitor their brains we see that their brain is not getting into deeper stages of sleep because they’re continuously being woken up by movement or sound,” Coleen Carney told CBC, the director of the laboratory.

An increasing amount of couples are now opting to sleep in separate beds and rooms, often due to one partner tossing and turning, differing temperature needs, or bumping into one another.

While some couples are resorting to the immediate fix of changing rooms, there’s a simple solution that is often missed.

Finding the right mattress.

If people aren’t comfortable with their mattress, it can cause them to disturb their partner during the night.

So, before you go sending someone into the spare bedroom see if you can find a mattress that will be perfect for the both of you.