OK so I had to post this. Whenever I did weed, my heartbeat always increases a lot. I'm in really good shape, so there is no issue of bad health. It just races, that's all. My girlfriend at the time was a lot of fun when we had weed, for she had a thing for listening to heartbeats and really loved listening to mine as it was racing. Hers also would pound and I found that pretty erotic myself. Anyway, just wanted to mention that for most, a fast HB is perfectly normal with Mr. Weed.