EXTREME SELF-CONTROL Our ability to exert self-control increases with practice, and some of us have practiced more than others! Magician David Blaine (top) endured standing in a block of ice (in which a small space had been carved out for him) for nearly 62 hours for a stunt in New York’s Times Square. A number of performing artists make their living as very convincing human statues, as does this actress (bottom) performing on The Royal Mile in Edinburgh, Scotland.

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