I got a sleep study at the age of 24 because my then-girlfriend (now wife) said "I got used to the snoring, but that thing where you stop breathing really freaks me out". The what now? In hindsight, I'd had signs of sleep apnea since I was in my teens despite being a healthy weight.

I was diagnosed with 'mild to moderate' sleep apnea and told to not drink, and to exercise more. No CPAP needed. And they were right- if I do those things, I don't have many problems. But then again, I can't always do those things.

What really helped though, and I'm loathe to even say it, was taking high absorption magnesium. I hate it because there are very limited studies that say it should work, and it's mostly promoted by absolute quacks. And yet, when I take it, I sleep really well without snoring or having apnea issues and if I stop, I sleep terribly.