A tiny device that clips onto your ear and zaps your vagus nerve might be the next big fitness hack. Early trials show that wearing it for just 30 minutes a day boosted oxygen intake during exercise by 4%! Researchers think it could help with fitness, inflammation, and even heart health. Imagine leveling up your workout just by chilling with a gadget on your ear. Would you try it? #Fitness #FitnessTech #Biohacking