For the first two days, I was depressed and sluggish. I had no sex drive. My pulse was slow no matter what. On the third day, I forced myself to workout...a 2-hour bike ride followed by pull-ups and push-ups. Felt fine. Kind of strange at times, but my heart did not beat quite as fast as before. Have been working out everyday since. Can't drink alcohol now that I'm on this stuff. 1-3 beers knocks me right out! Felt dizzy when I got out a chair too quickly today. Curious to see what is in store for me.