A Swedish man broke a Guinness World Record when he consecutively cracked 46 different joints in his body.
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Lundin said he spent months practicing cracking his joints in order to determine the most effective order. He said he had to learn to move slowly so as not to accidentally crack a joint prematurely.
Lundin said some joints were painful to learn to crack.
"The most painful joints were probably the smaller joints, such as the 'middle' joints on the fingers and the toes in general," he told GWR.