Why Sex in the City Will Lower Your Stress Levels

‘City air makes man free,’ wrote the sociologist Max Weber. But urban freedom is also restrictive, frustrating and anxiety-producing. There is one safe place to escape to for consolation: the body. The first article in a series.

In 1958, Joseph Brady published the results of a provocative experiment, called “Ulcers in ‘Executive’ Monkeys." Brady delivered rhesus monkeys a...