If you're considering adjusting your own CPAP air pressure settings, the safer method is to upgrade from a constant-pressure CPAP machine to an auto-CPAP machine. Auto-CPAPs (sometimes referred to as APAP) adjust pressure automatically according to your ongoing needs. You can read more about auto-adjusting CPAPs here.
After attaining his freedom, Nelson Mandela led the ANC in its negotiations with the governing National Party and various other South African political organizations for an end to apartheid and the establishment of a multiracial government.
The Greenboro Sit-Ins of 1960 provoked all manner of emotions when they occurred and they remain an important part of civil rights history.