Let me start by saying I have a very high tolerence to stims. I've been low carb/cal for a couple of weeks, so my energy levels are down. I took my first dose around 4:30, after a full day of work. I started with 2, but added one more right before I hit the door at about 5:15. Workout was great, I'm using PW and AP which both contribute to that. When I started cardio at around 6:15 I was jacked. Very smooth, no jitters or rapid heart beat it seemed. It is now 7:00 and I am still lit, a very nice almost high feeling. First doses are usually the best and then they fade. I may alternate with something else or run daily and see. A big thumbs up today.