Alicia McCarvell, who told followers she was using a CPAP machine earlier this month, has opened up further about her experience. (Photo by Jeremy Chan/Getty Images) Alicia Mccarvell is getting candid ...

Use a chin strap with your CPAP machine to keep your mouth closed and prevent dry mouth. If you breathe through your mouth, switch to a full-face CPAP mask that covers both your nose and mouth.

Research suggests that CPAP may improve headaches in some people with sleep apnea. But some people may develop headaches if their CPAP mask is too tight, if they develop nasal congestion, or if CPAP ...