I second wedrifid. I am not overweight and I don’t snore, but after a few years of persistent daytime fatigue, I got a sleep study, and it turned out I do have sleep apnea. May be worth doing a sleep study; if you do have it, then you get a CPAP and possibly a Provigil prescription, which can help a lot, and if it’s not apnea, the sleep study could provide you with other useful information about how you’re sleeping, and why you’re falling asleep during the day.
I second wedrifid. I am not overweight and I don’t snore, but after a few years of persistent daytime fatigue, I got a sleep study, and it turned out I do have sleep apnea. May be worth doing a sleep study; if you do have it, then you get a CPAP and possibly a Provigil prescription, which can help a lot, and if it’s not apnea, the sleep study could provide you with other useful information about how you’re sleeping, and why you’re falling asleep during the day.