herbalife is good. I tried that product last time. Gain 5 kg in a month by doing only simple exercise. But that thing FREAKING EXPENSIVE. RM200++ can last for 1 1/2 week. If you underweight, you have to consume 3 times a day. that's why it finish fast. I stop already taking that product. x mampu beb.. hehe.. now still 52kg. trying to gain as hard as I can.