I used to go to bed at 9 pm and wake up at 6:30 am. this is more than 8 hrs but i could not sleep straight. i normally wake up several time during the night. is that ok or not

Yes: that's ok. shooting for 7-8 hours a night is best for most people. Try not to drink a lot of fluids right before bed to minimize bathroom breaks in the night. try taking 300-400mg of magnesium glycinate before bed. this will promote restful sleep without sedation.

Try melatonin: Melatonin is a chemical in your brain that (helps you distinguish night from day.Minimize fluids if getting up to urinate 2 hours before bed.decrease caffeine,bed is for sex or sleep not for phone,ipad or tv, increase exercise.website for cognitive therapy below. http://www.myshuti.com

Okay: If you are refreshed when you get up in the morning and do not have day time drowsiness, there is no need to take any medications to help you have uninterrupted sleep. What you are experiencing is normal in people at your age (and mine), Have a healthy diet, exercise 30 minutes/day, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs.