Glass dildos trace their roots to the 1600s, when hand-blown hollow glass dildos—often filled with warm water for extra tease—were secretly used by Italian nuns for steamy self-pleasure, as noted in period texts mocking religious morals.
Even dim light at night can suppress sleep hormones
Exposure to very low levels of light (~30 lux for 1 hour) can significantly suppress melatonin production, making it harder to sleep.
