I used to be a bad sleeper , like sleeping only for 3-4 hrs work week. it badly affected my digestion, I got fat, I was weak, I ate junk and I drank more coffee

I used to be a bad sleeper , like sleeping only for 3-4 hrs work week. it badly affected my digestion, I got fat, I was weak, I ate junk and I drank more coffee and I was always dizzy and confused. The day I decided I need to sleep more and started to sleep for 6-7hrs every day and doing this consistently have improved my focus , less coffee and no frustration and I am active and lost few pounds. This is my personal opinion. things improve if you sleep more. 6-8 hrs is good.