The great majority of women don't have the genetic potential to get big, even if they tried. Muscle is extremely difficult to develop and requires training with heavy weights and low repetitions in order to add substantial bulk. If your goal is to add muscle tone, training intensely in a high repetition format will sculpt a hard, defined body rather than creating a big, bulky physique. The phrase conjures up images of a pill that magically melts away fat. However, while it would be great to be able to find weight loss in a bottle, these products aren't all they're cracked up to be.
Fat burners are herbal supplements.
Common ingredients in these products include ephedra, chromium picolinate, citrus aurantium, 5-HTP, Citrimax, guarana, and other herbs. Most act on the nervous system, causing a secretion of catecholamines which, in turn, accelerates the metabolism. However, it is important to note that proper nutrition is essential in any weight loss program. If you don't adhere to a nutritional regimen, you won't lose any fat. It's that simple.