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Excerpt from the first part of the article:

Repeated physical activity builds endurance by triggering widespread adaptations throughout the human body, but a new study reveals that the brain actually directs these physiological changes. Researchers found that activating a specific cluster of brain cells immediately after a workout is required for mice to increase their physical stamina over time. This discovery flips the traditional view of exercise physiology by showing that structural changes in the brain drive muscle adaptations, rather than just reflecting them. The findings were published in the journal Neuron.

Excerpt from the first part of the article:

A recent study of incarcerated individuals reveals that grandiose, narcissistic personality traits are closely linked to psychopathic tendencies, partially because people with these traits use manipulative strategies to navigate prison environments. This direct relationship between narcissism and psychopathy is especially pronounced in incarcerated women. The research was published in Psychology, Crime & Law.