Even though it's normal for the testicles to descend as a man ages, you may want to get that checked out.
Did someone edit their post after you posted this or did you think you were on a different board just curious doc?
While we’re on the topic of jiggling and the family jewels I did make the mistake once of running ten miles w/o support . . . spent about an hour doubled over in pain afterwards. I can’t imagine prehistoric “man” did much distance running.
Why do you think the guy that ran the original marathon in ancient Greece died right after he gave the message?