This product was awful for ME. But who is to say it wasn't good for someone else.
I used SST Perfomix Thermogenic for about 4 days and I had to quit. I was more afraid if anything. I started off by taking one pill 30 minuets before my workout the first day, as recommended by the guy at the GNC store. He said he had troubles with two pills ( and this guy is a gym rat), so I took his word for it. I felt great with one pill, I experienced all the levels, from the heating to the cooling to the intense focus. IT WAS GREAT! I did that again for the next two days and experienced the same thing. I even let my friend try one, and she loved it as well.
I don't know what possessed me to increase the dose, but I did. I had major regret before I even started my workout. It was so intense, my heart was pumping out of my chest, I couldn't breathe and contemplated going to the hospital to get my system drained out by these demon pills I had just swallowed. The affects lasted for about 2 hours, then I was back to normal. Although it worked fine with just one, I was so terrified that the thought of taking just the one pill scared me out my skin. If I were to accurately describe how I felt, it was like I was on drugs or having a full blown panic attack.
So this product was awful, but it may be good for someone else.
Bottom Line: Yes, I would recommend this to a friend