What if Everyone Sneezed at the same time, could it Change Earth’s Rotation?

What if every human on Earth sneezed at the exact same moment—in exactly the same direction? Could we slow the planet down, change the length of a day, or finally give Bob a longer lunch break? Bob investigates with recoil experiments, torque diagrams, and an extremely optimistic planetary calculation. Along the way, we discover why “the same direction” gets complicated on a sphere—and why everyone sneezing east is a different experiment entirely. In this episode: • How a sneeze transfers momentum • Why position and direction matter for rotation • When billions of turning effects cancel—and when they don’t • What an idealized calculation reveals about the scale of the effect • Why the atmosphere remains part of the story after the sneeze The roughly 36-femtosecond estimate shown in the video is an illustrative result under stated assumptions—not a measured effect or a permanent change to Earth’s day. Welcome to What If With Bob: serious science, questionable experiments, and one man who should not be responsible for steering a planet. What impossible experiment should Bob try next? Leave your question in the comments. #WhatIf #ScienceExplained #WhatIfWithBob