there are plenty of people that aren't overweight who have sleep apnea. larger neck, tonsils, deviated septum, and large tongue can play a big factor. some guys that just go on trt and gain a bit of size without working out develop it. go to your regular doctor and get a referral to a sleep doctor. they will hook you up and take data overnight. if you stop breathing 30 times in a hour, that's considered severe sleep apnea, mine was 120 haha, so you can imagine. once you get a machine and a mask, you'll use it for awhile and then go back to the sleep doc with your data, and they'll adjust settings on your machine and dial in the correct pressure. finding the right mask is crucial, i really recommend the philips dreamwear, it just goes under your nose (NOT in), and the tube is on top of your head, so there is no fighting with it if you like to roll around. cpap is very effective at solving the issue, after that the options are mostly surgical. it might take awhile to get used to the mask, which is difficult for a lot of people, you have to stay consistent, i had to use ambien just to be able to tolerate it while i slept. it took me probably 6+ months of trial and error before i could sleep with it more than a few hours, but once i got a single night using it, i literally got up the next morning and said man i feel like going for a walk and just went outside (prior to that i was in bed prob 75% of the day)