Sometime when I first started training (15 y/o) I decided to buy a pre-workout mix. I ended up buying a random one which turned out to be Jack3d. I didn't read anything about it but I knew a lot of people used two scoops so I thought I would too. I had a serious buzz and lifted harder and longer than I could before but I always had A LOT of trouble sleeping. I ended up reading into the sleeping issue when I came across an article of someone dying from a heart related thing which was caused (apparently) from jack3d. I still used jack3d until I finished the container but I decided to only take one and a half scoops instead. Recently, jack3d was banned in my country (Australia) and I ended up having a conversation with one of the personal trainers at my local gym about it. He said that there was a case where someone died and they found traces of jack3d in his heart. This actually really surprised me. Now I use 1MR and I havn't had any issues with it! 




