“[A] jury is free to credit or discredit any testimony.” Kelly v Builders Square, Inc, 465 Mich 29, 39 (2001). “That the [witnesses] involved . . . are professional observers [(physicians, in this case)] does not change the rule that their eyewitness testimony may be disbelieved by a jury.” Taylor Estate v Univ Physician Group, 329 Mich App 268, 285 (2019).