On 1 July some of the best cyclists from around the world will be taking part in the gruelling Tour de France race. But how do you go from riding your bike in the park to taking on some of cycling's biggest challenges?
Whitney's been to meet brother and sister Saskia and Alfie, who have done just that, to get their top tips on the sport.
But the big question is - can Whitney actually stay on her bike? Watch to find out!
Pictures from Indeed Productions