Why is Aamir losing weight again

Aamir is at it again. He is all set to lose weight. Actually his body is a piece of marvel, he adds or reduces weight with ease. It is often seen that Aamir loses and gains weight to get into the skin of the character. He is called Mr Perfectionist of Bollywood and rightly so. He is known to change his body according to the requirement of his role. For 'Ghajini' he lost lot of weight and added a muscular look. See in pictures the different phases of Aamir Khan when he has added or lost weight according to the requirement of the role. This time he is set to lose weight for some portions of PK which are being shot again. See different looks of Aamir Khan.