Jeffrey Miller+Follow15-Minute Burn = Running a 5K?!Who knew you could torch as many calories as a 5K run in just 15 minutes—without leaving your living room? This trainer-approved circuit is all about max intensity: think dumbbell thrusters, burpee broad jumps, renegade rows, jump squats, and mountain climbers. Three rounds, 40 seconds each move, and you’re done. No more hour-long slogs or endless treadmill miles. Who’s in for a quick sweat sesh that actually works? #FitnessHacks #QuickWorkout #HIIT #Health20Share
Alexis Nicholson+FollowStep Aerobics: The OG HIIT SecretDid you know your favorite HIIT class owes a lot to 1980s step aerobics? Back then, it was all about high-energy moves on a simple platform, blasting synth tunes, and sweating it out with friends. While HIIT today uses more gear and mixes up the intensity, the group vibes, music, and full-body burn all started with step. Next time you’re crushing intervals, thank those neon leg warmers for the inspo! #HIIT #StepAerobics #FitnessHistory #WorkoutTrends #GroupFitness #Health20Share
