This study is about Polycystic Ovary Syndrome (PCOS) and Obstructive Sleep Apnea (OSA). PCOS is a condition affecting women, causing hormonal imbalance and problems with metabolism. OSA is a sleep disorder where breathing stops and starts during sleep. Researchers aim to find out if using a device called CPAP (Continuous Positive Airway Pressure) helps people with PCOS by improving the way their body uses insulin, a hormone that controls blood sugar. This study involves people with moderate to severe OSA who do not feel very sleepy during the day. Participants will use CPAP or delay its use to see if it helps.

• The study will last 12 weeks.
• Participants will have insulin resistance tests.
• Eligibility: Ages 18-40, certain health conditions apply.