"Effective Weight Loss with the 12-3-30 Treadmill Routine"

The 12-3-30 treadmill workout, popularized by influencer Lauren Giraldo, involves walking at a 12% incline, 3 mph speed, for 30 minutes. This routine, which helped Giraldo lose 30 pounds, is praised for its simplicity and effectiveness in improving endurance and aiding weight loss without running. Experts advise starting gradually and incorporating rest days to avoid overuse injuries.