Last monday me and a friend did 1000 Pull-Ups as a fun challenge. Everything worked out fine and we finished all the reps with proper form. However a few days later one of my vains in the left arm does hurt a bit when doing Pull-Ups again. It also feels a bit deaf when touching it. Do you know what this could be, i really feel fine all the time, i am just a bit worried that it is smthing lasting for longer.