The primary effect that caffeine has is on your body's central nervous system. The drug increases the firing of your neurons and triggers your pituitary gland to release adrenaline. This creates a state of mental alertness and readiness that may enhance your workout performance. The effect may improve your workout performance and muscle growth, but research into the topic is not conclusive.
cool. the Jumpstart result varied greatly among my friends. I got this friend who said the jumpstart cream gave him great results for the start of the 2.4km ippt run, but towards the later stages in the run, he felt extreme fatigue in his legs, causing him to slow down greatly. and eventually getting silver instead of gold.