It can be tough to find a workout that’s effective at torching calories and inspiring enough to do consistently. But TikTokers may have solved this problem with the 12-3-30 workout, a kick-butt treadmill routine that personal trainers are on board with.
In 2019 Lauren Giraldo introduced the 12-3-30 treadmill workout, and the trend has continued to gain attention — especially after she posted a video touting its perks in 2020. Since then, the hashtag #12330 has garnered a whopping 98.9 million views on TikTok.
But is the 12-3-30 workout really worth the hype, and is it effective? Here’s what you need to know — and how to tweak the approach depending on your fitness level.
What Is the 12-3-30 Workout?
Simply apply these settings to the treadmill:
- Incline 12 percent
- Speed 3 miles per hour
- Time 30 minutes
And that’s it!
Giraldo credits her 30-pound weight loss to the 12-3-30 workout. After two years, she’s been able to keep the weight off by doing the 12-3-30 workout about five times a week, she says.
Her 2020 video inspired people to participate in the #12330challenge (37.6 million views), which challenges gym-goers to do this workout five times in one week.
