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TIME published a cortisol myth-busting piece on April 23 as searches for the term "cortisol" have nearly doubled since January and hit record highs for three consecutive months. The piece makes a clinically important point that most wellness content gets backwards: burnout is not associated with chronically high cortisol, it is associated with a flattened cortisol rhythm and sometimes low cortisol, a state the body reaches after prolonged stress has worn the system down. The hormone that everyone is trying to lower may already be too low by the time they notice something is wrong. Here's what people are reacting to: everything they've been told about cortisol and stress is probably backwards.

If you were to choose only three lifestyle factors that most profoundly shape how you age, they would be stress, sleep, and strength. Together, they form the biological triangle that determines your metabolic health, hormonal balance, inflammation levels, body composition, cognitive performance, and daily energy. These three factors interact so deeply that improving one nearly always improves the others. When optimized together, they can slow or even reverse many of the early signs of aging.

The Signal A preprint posted this month analyzed 227,860 nights of concurrent sleep and continuous glucose monitoring data across nearly 6,000 adults and found that sleep consistency -- not just sleep duration -- is one of the strongest behavioral predictors...