read this-
http://www.lifeenhancement.net/article_template.asp?ID=1799
And pay attention to this point
Resveratrol Provides “Training” without Exercise
How did the researchers explain all these improbable facts, causing the “cloak” that Galileo spoke of to be dropped? They did it through meticulous molecular biological studies carried out on tissues from the resveratrol-supplemented mice. In brief, their explanation goes like this: resveratrol stimulates the expression of the longevity gene SIRT1 (this had been known for several years), which codes for the protein SIRT1. The actions of SIRT1 are those of a deacetylase, meaning that it removes acetyl groups from proteins that have them in certain places in their molecular structure. SIRT1 performs this function on (among others) a protein called PGC-1α, which controls mitochondrial biogenesis and function; PGC-1α is thus a strong arbiter of cellular energy metabolism. When this protein is deacetylated, its biological activity increases, and so do mitochondrial number and function.
The result (as seen in the mice) is greatly enhanced physical capability in the absence of increased physical activity (i.e., exercise). This enhancement is induced in part by an increase in the proportion of “oxidative” muscle fibers, the type with the greatest capacity to carry oxygen and sustain aerobic activity (such a conversion of one type of muscle fiber to another type is called remodeling). Oxidative fibers are the type of muscle fiber that maximizes endurance and is found abundantly in trained athletes.
