It appears you didn't read past the first graph (which initially implies a reduction in sleep due to sharing a bed with his partner). But he then goes on to say this:
Turns out, since we started sharing a bed, most nights I have the same amount of sleep as before.
What follows is a further analysis leading to this conclusion:
Whilst spending nights with my girlfriend results in less time in a state which Fitbit recognises as “lying in bed ready to sleep”, because we go to bed later and get up earlier, when I am in that state, I sleep better.
So it's not that he's sleeping less, or more poorly while sharing a bed. That first graph is just a product of less time spent physically in bed. In fact, there's another graph he presents that shows basically the same amount of actual sleep while in bed, with or without his partner.
Try not to read your own biases into other people's writing, and be very careful when skimming. It's a hard habit to break, I know, but it can really hurt you in life (no joke... misreading an email in a professional context can make for nasty mistakes).
It's amazing what humans can get used to. We recently got a puppy, and went from "wake up every time it moves" to "wake up only if it starts whining". Didn't even take 3 months.
I keep telling her: please, sleep on the couch. Literally every time you sleep out there, you get better sleep, and feel better in the morning. But she always says no.
I wish we were one of those couples who secretly, or otherwise, slept apart at least a few nights a week.
My eldest slept so solid that you could have fired a cannon next to him and he would have slept through it (and still does, only he's a bit large to sleep in a crib now...).
The most important factor is something to create a shade around the crib so it isn't bathed in light or receives reflected intensity changes from a tv or so.
She doesn't wake up from the TV-sounds-through-an-ajar-door, but being in the same room would definitely wake her up, to say nothing of falling asleep with that sort of stimulation.
Obviously if the baby is crying heartily either of us will investigate, but I don't feel the need (most of the time) to check on him if there are sporadic gurgles, laughs, or "noise".
That said I think my wife is coming round, she's started sleeping with earplugs now so that she doesn't wake up unless there is a real "emergency".
Yup. We live in New York. There's no such thing as absolute silence here, and she can still hear things from the living room. We're definitely not requiring silence :P
Making sure they're well fed is definitely a good idea; my wife was worried that she'd over-associate sleep with eating, and wouldn't sleep without eating first... but I never really saw this as a big problem. She's a baby; let her eat before bed.
But all kids are weird and different - some kids have reflux, and feeding them shortly before going to bed is going to keep them awake. Some get gassy. Some just don't like sleeping with a full stomach. That's probably the worst thing about being a new parent - you can read and listen to all the advice you want, but then you gotta figure out what actually works with yours and what doesn't.
I got CPAP therapy going (funny machine that fixes your breathing). Not super sexy but after a few weeks of using it every night I am orders of magnitude better. Better moods, more energy, I wake up rested and I don't need 10 hours of sleep to feel normal. I used to spend most of my weekends catching up on sleep, little did I know I was not really sleeping well at all.
With the CPAP therapy I don't move at all during the night according to my partner.
Now all we need to do is get the cat to stop waking us up and her kid to sleep in his own bed :)
I was married for a long while - and I miss it. That said - she only weighed 95 pounds, so maybe not having to deal with king-kong in my bed helped.
I think that sleeping together (in the literal, dictionary sense) is the least together-thing you're doing as a couple, because you're literally not even aware of the time.
While I perfectly understand that each couple finds it's own way, subsuming being asleep to be like some sort of deep, nightlong, perceptionless coma is just incorrect.
• God I miss those night kicks.
My wife and I went to a mattress store and tested out every mattress. One of us would close our eyes while the other got on the mattress and rolled over. When we couldn't tell when the other was moving we had our mattress.
It ended up costing like $3000, but if you can afford it I think that's a small price for something both of you will use literally ~30% of every day.
I snore. It wakes my spouse up at night, which causes him to wake me up... sort of. I'm not always conscious of him waking me, but I will temporarily roll over. I sleep pretty heavily (and always have), so waking me is difficult. I sleep more poorly when we share a bed, and he most definitely does.
The best solution we've found is one of us going into another room. Earplugs help little: He still needs to hear the alarm. I cannot be trusted to wake to them with regularity (living on my own, I'm occasionally late to work if I work early). They have vibrating alarms for the hard of hearing that might work out, but I have not tried.
We still have cuddle time if we should choose it and still do normal "bed" activities. If we both sleep well, we are both happier during the day. The payoff is definitely worth it. We occasionally sleep in the same room if he sleeps earlier than me, using our own blankets (common here in Norway). Which again, defeats the point for some folks but is really great because we both stay at a more optimal temperature, keeping us sleeping better than sharing.
Been there. Done that.
After a sleep study, I started using a CPAP machine and it totally turned my sleep and life around.
For me, the sleep thing is something I've had since I was a child and isn't connected to the snoring. I have a later body clock than most folks. I was the child that refused to wake to open christmas presents and i've always slept soundly like this. My poor mother had to fight with me through school. I sometimes simply don't hear alarm clocks, unfortunately - which nearly disappears if I wake at 9-10.
As far as vibrating alarms go: I use my Apple Watch as my alarm. It's set to silent, so it just vibrates when it's time for me to wake up. For the most part, my wife is never aware of it going off. It's been a total game changer for me.
One thing I've realized, though, is it doesn't make a big difference to me. We're both fairly deep sleepers though occasionally my snoring wakes her and she nudges me and I roll over. We also have a couple of cats on the bed, and when they were kittens I'd sometimes wake up and yell at them for scratching elsewhere in the house.
What I've realized is, despite waking up more often, I'm not significantly less well-rested. I only seem to wake to a cat pawing my scalp or my wife rolling over when I'm already in very light sleep anyway, so it's no problem.
But, I hear you.