This is a legit question why do balls turn blue or what does the term blue balls come from.

Explanation:

Blue balls (also known as lover's nuts) is slang for an uncomfortable testicular sensation that can occur during a state of male sexual arousal. Blue balls. Other names. Epididymal hypertension, sexual arousal orchialgia.

Blue balls is the slang term for epididymal hypertension. This manifestation happens in light of the fact that blood develops in the gonads during excitement, making them throb if the individual remains aroused. Albeit blue balls might be awkward, it doesn't generally keep going long.

Explanation:

Hope this helped!

you may having too much sleep.. a good night sleep consists of about 7 hours. more than that could be the reason you're still tired throughout the day.