Getting old is terrifying. What if we could stay 21-years-old forever? There are plenty contraptions and substances out there which can do just that. Here are seven that will help you maintain your youth. [At least, that's the pitch.]
Professional tennis player Novak Djokovic is having a career year, winning two major tournaments and suffering only two losses all year. What can he attribute to his success? He says spending time in this pressurized oxygen chamber is part of it.