Kids at a school in Lancashire in north-west England are the first to try out 'free running', as part of PE lessons.
Free running is a bit like urban acrobatics, where people use buildings and streets to perform stunts.
Ricky went to check out a school that has a section in their playground just for free running-style activities. Pupils taking part are always supervised by an adult.
Remember, free running is NOT something you should ever try out by yourself - in this film Ricky and the pupils were supervised by an adult expert.