as far as I know they just dilate your blood vessels, so you get a better pump and more blood flow to the muscle. IN theory more blood you get there the mor nutrients and the possiblilty of a guicker recovery. From what I have herd about it, its not all that. Somthing to take before a body building show maybe.
-------------- .......adversity causes some to break, but others to break records!
......minds are not vessles to be filled, but fires to be enlightened
......Confucious once said ,DO NOT play leap frog with a unicorn
I have tryed MRI no2 and i have noticed some of their claims but not everyting that was expected. Somebody reccomended that i try a product from Thermolife called "xpolde". have you ever heard of this product? I have not been able to find any customer reviews on it. Here is a like for it in case your interested http://www.discountanabolics.com/page/DA/PROD/THERMOLIFE/TL05