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Originally Posted by
omna82
HOW DOES IT WORK
?Clenbuterol works the same way as ephedrine. However, unlike ephedrine, which is out of the body in a few hours, clenbuterol lasts for days. So you are on it 24 hours a day. No one chooses to be on ephedrine 24 hours per day, because it interferes with sleep, and so clenbuterol is more effective? says Bill Roberts (Bill Roberts holds a bachelor's degree in Microbiology and Cell Science, and a doctoral degree (Ph.D.) in Medicinal Chemistry)
Clenbuterol does work effectively as a fat burner though. It does this by slight increases in the body temperature. With each degree that the temperature in your body is raised from the use of clenbuterol, you will burn up approximately an extra 5% of maintenance calories. This makes it effective as a fat burner. Your body will fight this by cutting down on the amount of active thyroid in the body as well as through beta receptor down regulation which explains why you only have a limited effective period to take clenbuterol.
I got this from another site,it says 5% so you do the math.