i had gotten high a few nights ago & was completely fine .. until i smoked a cigg, after a few hits i began to fill dizzy, nauseous & weak.. eventually leading to me falling to the ground. I was conscious for most of the time, able to walk, talk and fully function after i had fell.. i was told i shook for less than a minute & was taken to the hospital .. i was diagnosed w. near fainting... the doc told me ciggs have the ability to change your heart rate, blood pressure & cause you to faint.. i was advised to quit smoking.