I used to be an extremely heavy sleeper and could sleep through anything. And by anything, I literally mean anything - jackhammers, thunderstorms, you name it! Sleeping was my superpower.
The first year after my son was born though, Bee got morning sickness with our daughter's pregnancy and I became solely responsible for our son. Ever since that day, I've become a very light sleeper! I wake up when I hear the kids talking in their sleep, and even wake up several times a night for no reason at all. Thankfully I can usually back asleep, but not always.
Being a light sleeper is new to me, and I can't say I'm a fan! I hope that once the kids grow up, I'll go back to my hibernating ways? Dunno if that's how it works, but here's hoping!
Have you become a lighter sleeper since having kids?