You can delete your history then disable history so YouTube won't store the videos you watch. Recommended videos are there based on other videos you've watched. Go to history and press or click where it says pause viewing history. I'd recommend to delete history before pausing it.
Ambien is the brand name for zolpidem, a drug that's used to treat insomnia. Insomnia is a sleep disorder that makes it difficult for you to go to sleep, stay asleep, or both. Ambien is in a class of drugs called sedative-hypnotics.
Ambien has a rapid onset and short duration of action, similar to short-acting barbituates. Its short duration didn't always allow users to remain asleep for 7 to 8 hours, which led to production of extended release version, (and later sublingual tablets to take when people awake in the middle of the night.