I'm willing to bet it's simply a sudden rush from oxygen deprivation.

The years of smoking have likely increased your blood pressure and affected your circulation, so taking the big rips might cause a quick shortage of oxygen to the furthest reaches of your body, specifically the arms, legs and eyes.

If you are literally convulsing though, you may want to see a doctor dude. It could be something really serious.
Faddenator Reviewed by Faddenator on . Hello I'm new, but I have a problem with smoking at the moment. Hello, i am hoping I can get some clearing up on what is exactly happening to me! Well, i'm 22 years old, and i've been smoking since 17. Had my quirks with it, but nothing has ever been this bad. I'd say since around november ish, I started having these rushes that lasted about 5 seconds. They were intense and commanding, but not harmful and they did not make me feel bad in any way. Slowly they grew in intensity from time to time. Let me explain what exactly happens. It doesn't seem to Rating: 5