[00:02] world's most popular psychoactive drug, lifting fatigue and helping you focus on daily tasks. But, how? Caffeine molecules are a similar shape to you're awake and tells your brain to sleep. By blocking adenosine receptors,
[00:17] caffeine keeps you alert. It also tightens blood vessels and speeds up your breathing by stimulating your respiratory center, all while promoting [music] boost your mood and improve attention. But, these benefits stop
[00:31] paying out at higher doses. Drinking more will keep improving your reaction times and keep you awake, but at some point your accuracy stops getting [music] better and starts to get worse. Although caffeine temporarily blocks
[00:43] adenosine receptors, adenosine continues to build up. Once caffeine's effect wears off, it bounces back, making you need more just to keep yourself awake. Over time, higher doses are more likely to make you anxious, sleep worse, and
[00:56] can even trigger issues like irregular heartbeats. Luckily, caffeine withdrawal is normally short and mild. So, if it makes you anxious or jittery, try tapering off or just cutting it out. For most people, low doses are the sweet
[01:10] most people, low doses are the sweet spot.