Here's a little PSA: If you have: * High blood pressure * Depressive or angry episodes * Wake up tired no matter how long you've slept * Loud snoring Take a sleep study. You may have obstructive sleep apnea. I got it badly enough that sleeping for 14-15 hours daily did nothing for me. I didn't realise it at the time but I was on track to die, tired, at about 50. Today I sleep with a little CPAP machine that keeps my…
Polysomnography (sleep test) is the gold standard, but O2 saturation is a good indicator as well.
An oximeter isn't a bad thing to own and can be had cheaply from Amazon. Sleep apnea can emerge with as little as 10% weight gain, acid reflux or allergies. If you really care about your sleep, heart and brain it doesn't hurt to check once in a while.