What causes sleeping problems
Humidity builds up until body overheats
Different temperature requirements to partner
Intermittent unwanted smells – probably why so many sleep separately
Co2 build up under bedclothes
The solution

A porous bolster under the middle of the duvet connected to a quiet extractor fan at the foot of the bed
Timed air sampling for humidity, Co2, methane and temperature with remedial extraction
Manual override for extraction on either side – just press either button on the top of the bolster
Charcoal filter in the fan module removes smells
Warm air could be blown too for prewarming the bed
So, while you sleep temperature and humidity are constantly monitored and regulated
No more waking up at 3 in the morning in a muck sweat