Stolen from my prior comment:
I started experimenting with AMP HP recently as well. I even went as far as doing a untreated left, and treated right leg recently to see if I could tell a difference. There was a subtle, but real difference in the feel of my legs. One way to describe it is almost like a numbing effect.
I just don’t get the typical burn or pain in the treated muscles. It may well be at least partly placebo effect, but I do think there is something to the lotion. I’m honestly surprised there isn’t more discussion about it when you see all the other marginal gains discussions.
Adding to my older thoughts, each time I use it, I notice way less burn in the legs in peak and sustained efforts over Threshold. I can focus more on the engine via my breathing, heart rate and RPE. The AMP seems to keep the legs to a point where I notice some fatigue, but it is not distracting or leading me to reduce my effort.
Placebo or not, I like the results and the cost is fair enough for me to consider use. They have a new formula set for release, that seems to address the application and surface condition issues. If it is still effective, I see minimal reasons for people not to try it at the very least. It’s sure a lot cheaper than the Keytone movement that is equally wishy-washy for “real” data and results…