Probably Melatonin. A lot of people take melatonin pills, gummies, etc. to help them fall asleep. Heck, I took some last night.
No its not. Some parasites can also penetrate the skin.
Answer:
biting you tongue hurts when it not on purpose because your body is ready to take the impact of you teeth and when its not on purpose, you tongue is soft and easy to cut through
Explanation:
