Ever get stuck in a brain fog? Neuroscientist Dr. Hayley Nelson says you can boost your focus instantly by splashing cold water on your face for just 10 seconds. It’s not just refreshing—it actually triggers your brain’s alert mode, slows your heart rate, and calms stress. Warm water won’t cut it; you need that icy jolt! Next time you’re zoning out, try this free, science-backed trick and see how fast you snap back to attention. #FocusHack #BrainTips #LifeHacks #Health