Âm thanh chia sẻ

Ever notice how you wake up… right before your alarm goes off? Like your brain is spying on the clock… but here’s the creepy part—it kind of is. Your brain has an internal timer called your circadian rhythm, and when you set an alarm for the same time every day, your body actually starts learning it… down to the minute. A few minutes before the alarm, your brain releases a stress hormone called cortisol… yeah, the same one linked to anxiety… just to wake you up early. But here’s where it gets wi