"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
You can't lose weight without exercise. But i've got a philosophy about exercise. I don't think you should punish your legs for something your mouth did. Drag your lips around the block once or twice.