Jitter Clicking

Jitter clicking is a technique that involves pressing your mouse button incredibly quickly in order to do various activities in-game while your arms vibrate. You tighten your forearms to the point that your hands start vibrating, and you have to use that vibration effect to press the buttons while jitter clicking. It's important to remember that you're not vibrating your finger muscles here. Instead, you strain your arms to create a powerful vibration that travels all the way down to your fingertips.