### Comment:
A study from like the 40s showed that sunlight to the nuts can increase test by 200 percent. Validity is questionable though cus it was done so long ago

### REPLY:
Google says true. [LONG $LAMP](https://www.menshealth.com/health/a19539973/i-put-a-giant-red-light-on-my-balls-to-triple-my-testosterone-levels/)

### END.