Fitness & Exercise
Is Your Heart Smarter Than Your Fitness App? The Low-Key Training Trend Taking Over TikTok
Fitness influencers are swearing by a deceptively simple formula that says you've been running too hard this whole time. We asked the experts whether the '180 Formula' is a genuine game-changer — or just another viral workout myth dressed up in a heart rate monitor.
Mar 12, 2026