Most people know that tobacco can harm the body. Why do some people still use tobacco?

answer: Smoking tobacco damages your heart and blood vessels (cardiovascular system), increasing your risk of heart disease and stroke. ... Smoking causes high blood pressure, lowers your ability to exercise, and makes your blood more likely to clot. It also decreases HDL (good) cholesterol levels in the blood.  People say that they use tobacco for many different reasons—like stress relief, pleasure, or in social situations.

hope this helps

"Stopping or cutting back on tobacco causes symptoms of nicotine withdrawal. Withdrawal is both physical and mental. Physically, your body is reacting to the absence of nicotine. Mentally, you are faced with giving up a habit, which calls for a major change in behavior. Emotionally, you might feel like as if you’ve lost your best friend. Studies have shown that smokeless tobacco users have as much trouble giving up tobacco as cigarette smokers who to quit smoking."

Symtoms of withdrawl:

Dizziness (which may last a day or 2 after quitting)

Depression

Feelings of frustration, impatience, and anger

Anxiety

Irritability

Trouble sleeping, including trouble falling asleep and staying asleep, and having bad dreams or even nightmares

Trouble concentrating

Restlessness or boredom

Headaches

Tiredness

Increased appetite

Weight gain

Slower heart rate

Constipation and gas

Cough, dry mouth, sore throat, and nasal drip

Chest tightness

Visit https://www.cancer.org/cancer/cancer-causes/tobacco-and-cancer/why-people-start-using-tobacco.html for more info.

Have a good day! :)

well, it depends. it is natural to not fall asleep before 11: 00 p.m. teens need about 8-10 hours of sleep each night to function best.

enjoy your day!