I am a runner and I found it challenging too. However, I think it’s also because it’s still a treadmill workout and I hate the treadmill. It takes a lot of mental energy for me to focus on a treadmill workout. If I can adapt the workout to a climb up the mountain, I think it will be less challenging.

I don’t think I would last 3 minutes in a 12% incline. I see these reels all the time and they say they’re at 12-15% but I never looks like that. I do intervals of 2-6% and 6% gets old quick. You’d have to be in amazing shape to really do this for 30 minutes.

Anonymous wrote:

Anonymous wrote:The 12-3-30 is a treadmill workout that asks you to walk for 30 minutes with the treadmill set at three miles per hour and a 12% incline.

That’s a pretty leisurely pace. Not sure how that would get your heart rate up. But anything is certainly better than nothing. So go for it.

Probably wouldn't take fitness advice from this guy.