Using  Phentermine is one way to stay slim .. but i use Yoga mostly .. ever since having my operations.  Trendy woman stay healthy .. by exercising and doing yoga.. that was what my doctor had said to me.. when i told him.. that i wanted to lose those extra spare tires around my belly.  And for someone who love food as much as i do,  i find it really hard to not eat.  So i took up Yoga instead.. but i know of some friends.. who uses other alternatives.. and it works for them.  To each his own eh.