Sleep like a genius: Infographic reveals the bizarre snoozing habits of the world's most successful people

EXCLUSIVE: Part of Margaret Thatcher's formidable reputation was down to how little she slept. The former British prime minister (bottom right) was believed to get by on just four hours of sleep each night - and she wasn't the only one. Barack Obama (top right) currently only gets six hours of rest each night, The infographic (left), created by Berkshire-based Made to Measure Blinds, reveals most of the successful people named are below the recommended levels of sleep of seven to nine hours each night.