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Already checked? You can find even more exciting videos in the Checker World of the ARD media library: https://1.ard.de/checkerwelt. ???? Checker Julian loves roller coasters, but he has never ridden one like the "GeForce" in the Holiday Park in Hasloch. Julian races through the curves and has a lot of fun, but he also feels a little uneasy: his heart beats faster, his hands get sweaty and he gets a little scared. Why is that and what is happening in his body? * Comments are disabled to protect minors. If you have any questions or comments, please email [email protected].