“In Russia, medical self-awareness is at the level of Zimbabwe” (about Russians’ relationship with health). “It’s no more dangerous than being on Red Square without lead panties, where the basalt and granite of the Mausoleum are very phonic” (about X-rays at the airport)” .“The muscles of the hair follicles contract and piloerection occurs” (about goosebumps).” “Because of this purity, the immune system has nothing to do, and it begins to go crazy and fight not with the worm, but with the birch, the cat and the fish” ( about the boom in allergies).” TheQuestion collected answers from the best doctors, psychologists, medical workers, and popularizers of science to questions about what we know the least about—about ourselves and our health.