The 12-3-30 treadmill workout has millions of views on TikTok. Here s what fitness trainers think about the routine, benefits, and how to add it to your week.
I did the 12-3-30 workout from TikTok to see what treadmill walking on an incline could do. Here s what I learned and the surprising strength gains I found.
The 12/3/30 treadmill workout has been making waves on TikTok. So, what is it? Here are the basics, the benefits, and more plus, two personal trainers weigh in.