first of you don't smoke a shisha.... You smoke shisha out of a hookah. 2nd, depends what shisha you put in, but a bowl of shisha about equivilant to a pack of cigarettes. I've smoked hookah for 4-5 years now practically everyday.
I'm confused, you said you felt your lungs bleed from smoking hookah, you you're saying hookah is less worse than cigarettes?