@damselindistress

You get dizzy for two reasons...the air which u inhale through the shisha has less oxygen and more Carbon Monoxide than normal breathing air which makes ur brain starve for oxyen....another cause is that the Nicotine u inhale from shisha lowers ur blood pressure which also means less oxygen flowing to the brain...so u get dizzy

in any case u build stamina with time but to avoid that side effect dont smoke on an empty stomach with with coffee....and try to not inhale as many times back to back without a few seconds passing by, leave a gap in between where u inhale normal air. Note that around shisha places the air quality is lower than normal to begin with so u need at least 15-20 seconds in between puffs

lastly water....keep sipping water and try to avoid caffeine...and ur all set