Your BMI is not the real issue, Obese Pilots
The issue is not obesity it is that you are flying without proper rest, or more serious you could die, Sleep apnea is a serious sleep disorder that occurs when a person's breathing is interrupted during sleep. People with untreated sleep apnea stop breathing repeatedly during their sleep, sometimes hundreds of times. This means the brain -- and the rest of the body -- may not get enough oxygen. If you have sleep apnea and it is treated usually with a CPAP machine you will get your medical, the FAA however does not want you flying if you have OSA untreated.