Sleep is governed by the circadian rhythm, which is typically entrained to the 24-hour solar day. As the sun rises and sets the human body's metabolism responds accordingly. But in this case study, the circadian rhythm of a patient with bipolar disorder was also linked to the 24.8-hour lunar cycle, which contributed to his manic-depressive episodes.
In the second of a two-part series involving iconic astronaut Buzz Aldrin, we delve further into high-altitude illnesses, prevention and management. We'll also debunk a few myths about altitude sickness.