Männer haben einen täglichen Hormonzyklus – und dieser ist mit der Schrumpfung ihres Gehirns von morgens bis abends synchronisiert

>The study involved scanning a 26-year-old’s brain 40 times in 30 days. Each magnetic resonance imaging (MRI) scan was collected at either 7 a.m. or 8 p.m., which is when levels of steroid hormones — namely, testosterone, cortisol and estradiol — are at their highest and lowest, respectively.

>It’s also key to note that this pattern was seen in only one person’s brain, and different patterns may emerge in different people.