CPAP devices offer ramp features that start with lower pressure and gradually increase as you fall asleep

https://andywcki782.lucialpiazzale.com/choosing-between-a-sleep-apnea-oral-appliance-and-cpap-for-mild-cases-1

CPAP devices offer ramp features that start with lower pressure and gradually increase as you fall asleep, helping new users adapt to therapy more easily.