A new fitness trend gaining popularity on TikTok involves a specific walking method – 12-3-30 – promoted by trainer Lauren Giraldo. The routine consists of walking at a moderate pace for 30 minutes, incorporating 12 minutes of incline and 3 minutes of flat walking. Giraldo asserts this method is more effective for fat burning than running, due to its activation of specific metabolic zones. The system is designed to be a short and efficient workout. Proponents suggest it accelerates calorie deficit and boosts the body’s fat-burning capabilities. The trend is attracting attention for its accessibility and potential as a low-impact exercise option.