What If Everyone Turned Into a Baby Except You?

What if everyone on Earth turned into a baby… except you? At 7 a.m., eight billion people become one-year-olds, and they grow back one year every hour. Toddler chaos, a planet of six-year-olds, a world run by teenagers, the real science of growing brains, and the morning your own dad looks at you and asks who you are. If the whole world had to be one age for a day, which age would you pick? Tell me in the comments. Chapters 0:00 The oldest person on Earth 1:16 The terrible twos 2:06 The baby brain 2:31 Three, four, five 3:02 A planet of six-year-olds 3:25 Kids in charge 4:52 Teenage planet 6:04 The longest night 7:06 Your dad, before you 8:50 My turn Sources & notes • In the first few years of life, more than 1 million new neural connections form every second (Harvard University Center on the Developing Child, “Brain Architecture”). • Babies are born with about 300 bones; many fuse as they grow, and adults have 206 (Library of Congress, Everyday Mysteries: “Do babies have more bones than adults?”). • The prefrontal cortex, which handles planning and controlling impulses, is one of the last brain regions to mature; the brain keeps maturing into the mid-to-late 20s (National Institute of Mental Health, “The Teen Brain: 7 Things to Know”). • Children 6 to 12 years old should sleep 9 to 12 hours per 24 hours, and teenagers 13 to 18 years old 8 to 10 hours (American Academy of Sleep Medicine consensus, Paruthi et al., 2016, Journal of Clinical Sleep Medicine 12: 785–786). • In a lab study, prepubertal boys (about 10.5 years old) were about as fatigue-resistant as well-trained adult endurance athletes during high-intensity exercise, and recovered faster than untrained men (Birat et al., 2018, Frontiers in Physiology 9: 387). • The world population is roughly 8.2 billion people (United Nations, World Population Prospects 2024). • Fiction: everyone turning one year old, growing back one year every hour with only the memories they had at each age, the world running on autopilot for a day, and it happening to you two days later are this story's premise. One Small If — One small change. Every consequence. Subscribe:    / @onesmallif   #whatif #babies #animation