The most intense and efficient pre-workout I have tried. Attention: it is very strong and definitely not suitable for beginners in fitness. A good scoop is 2g above the recommended dosage, so it requires minimal emptying. Within 10 minutes of consumption, it creates this "tingling" sensation and you just have to move, start pushing yourself. It doesn't help much with focus, but the repetitions will come out like rockets. Personally, it gave me that extra boost I needed after about 30-40 minutes of training to work a little harder and complete the program within the hour, without much complaining. The energy comes in waves and it is important that the recovery comes the same way, something that is not true for similar products even with lower caffeine content. The creator has made a great formula here and we thank him, R.I.P.