What’s the Deal with the Viral “12-3-30” Treadmill Workout?

Image via Lauren Giraldo/YouTube

TikTok led to the emergence of countless viral trends this year, even in the world of fitness. One of the latest is Lauren Giraldo’s “12-3-30” treadmill workout, and people are wondering how it works and if it’s effective.

You can perform this viral workout by changing the settings on your treadmill to incline: 12, speed: 3, and time: 30 minutes. Giraldo uploaded her original workout to YouTube back in 2019, but it only gain traction after a shorter video on TikTok recently received millions of views.

Giraldo discussed her viral workout with Today and said she came up with it by playing around with the treadmill settings at her gym. She admitted she struggled in the beginning, but the workout helped her feel less intimidated at the gym and she really started to enjoy it.

If you’re thinking of trying it yourself, keep in mind that working out this way for 30 minutes straight isn’t a realistic goal if you’re still a beginner. Your incline should also be increased gradually, and you should take rest days in between because this workout can put a lot of stress on your lower back, feet, and knees due to its high-impact nature.