In an upcoming book, sociologist Michelle Janning calls couple-sleeping “a complicated, changing and often-challenging social experience,” reports The Columbus Dispatch.

Todd, my husband, doesn’t kick (thankfully). But he does snore, steal blankets and, when he can’t sleep, turn on the light-ripple-casting iPad, or toss and turn in increasing frustration. He has also taken to unconsciously knocking a single knuckle against the headboard.