Health refers to physical, mental, and social well-being. It’s a broad category that contains fitness and exercise, nutrition, health science, and mental health.
Nettie Stevens and Edmund Beecher Wilson independently discovered the chromosomal XY sex-determination system (that males have XY and females have XX sex chromosomes).
Tripping is slang “for having a psychedelic experience”. Tripping isn’t a drug, it is a state of mind that some psychedelic drugs let us access.
Erection, ejaculation, and orgasm are related, but not mutually necessary. Any one event may take place independently of the other two.