One time I smoked 4 bowls of exceptionally good weed and this was back when my tolerance was low. I stumbled outside and collapsed and I just laid there feeling my body pulse as my heart raced. I then remembered that nobody has died from a mj overdose, my heart wasn't going to explode. After that I felt great.


Maybe you have a heart condition? You should look into that, if nothing is found maybe you can overcome a mental block.