What is the 12-3-30 treadmill trend? Can it help burn more calories?

TikTok’s viral 12-3-30 workout, popularized by Lauren Giraldo, involves walking on a 12% incline at 3 mph for 30 minutes. A study reveals it burns a similar amount of calories to running, but utilizes a higher percentage of fat as fuel. Ideal for beginners or those with joint issues, it offers muscle engagement and cardiovascular benefits.