Unraveling the Mysteries of Human Bodies

#32: Uncovering the Cause of a Disturbing Crack

Some people have unusually loud bones—specifically, their joints crack audibly when moved, especially their knees. While many experience this without concern, one individual grew worried after a visit to a physical therapist.

Their physical therapist was visibly concerned about their knees cracking, which was reassuring to them. According to the storyteller, the cracking is due to their knees being very inflexible, a diagnosis much less serious than they feared.