For most people with sleep apnea, a CPAP (Continuous Positive Airway Pressure) machine is the preferred and commonly prescribed option. It delivers a constant stream of air to keep airways open during sleep. BiPAP (Bilevel Positive Airway Pressure) machines are better suited for individuals who have trouble exhaling against continuous pressure, such as those with central sleep apnea or other respiratory conditions. While CPAP is effective for obstructive sleep apnea, BiPAP offers two pressure levels for easier breathing and enhanced comfort.