Now just for clarification, I am no gym expert, but I'll have to these fat burners are quite amazing. Most fat burners I have tried or gone through, usually give me the jitters, but not with jacked factory. I usually do sprint intervals 5am in the morning before I go to work, and with that being said, I usually dead tired afterwards. This goes to show how going to work afterwards is quite daunting. However when I'm finished with my morning routine and take these fat burners, I'm wide awake and able to get my assignments/projects done. Also, for off the records, it also helped me with depression. Usually going to work tired, puts my mindset in a negative mood. Usually thinking like, "why am I doing this to myself", or "should I just quit". At first I thought it was just me tired of work, but it was actually just me being exhausted. Not only exhaustion from my morning training, but just not having the energy in the morning, even in my rest day. So, in all honestly, thank you jacked factory for helping me out, not just physically but mentally too.