Turns out you don’t need to hit 10,000 steps to boost your health. A Harvard doc says interval walking—alternating 3 minutes slow, 3 minutes brisk, for 30 minutes—can seriously up your fitness game. People are raving about it online, and it’s way more doable than that old 10k step goal (which, fun fact, was just a catchy marketing thing from the ‘60s!). Better mood, sleep, and heart health? I’m in! #FitnessHacks #WalkingTips #HealthNews #Fitness