BSN's original weight management formula was developed to increase the burning of fat and calories while keeping energy levels at a maximum. Along with the positive fat burning effects, THERMONEX's proprietary blend of caffeines, thermogenics and tyrosines is designed to improve physical performance, promote mental alertness and acuity and regulate thyroid function already in a normal range. An extremely sought after benefit is the absence of a post-serving crash; this is made possible with Naringin, prolonging the effects of all other ingredients, steadily bringing energy up, leveling it off and then slowly bringing energy levels back down.