JOE Wicks has become the nation’s unofficial PE teacher this week after millions have tuned into his live YouTube videos for kids off school. The millionaire fitness guru, 33, currently has two major TV broadcasters desperate to bag him to front a stay-at-home fitness show – but things weren’t always a roaring success for the star. Joe, also known as The Body Coach, started out eight years ago without a fat bank balance, handing out flyers at tube stations in a bid to get people to attend his park bootcamps. He had to borrow a £2,000 loan from his parents to start his Rumble In The Park classes, and so few people showed up that he was unable to pay them back. Although he is passionate about nutritious meals now, Joe previously admitted he grew up on a council estate and his mum had “no idea about healthy eating”. Instead, Joe grew up on a diet of pasta and sandwiches every night, and it wasn’t until he was older than he overhauled his meals. He told the Mirror: “I grew up on a council estate. My mum left school at 15, had my brother at 16, then me at 19, she…