I feel like pre-workouts are a waste of money, and in reality, all you really need is just caffeine, so why even buy an entire tub of something you have to scoop daily? What I do is I just swallow one tablet that has 200 mg of caffeine in it, and that's all you need. And I've been doing this for years now, and every single day, it hits me like a truck, and I have not seemed to gain any tolerance to it. And it also saves so much time and money rather than brewing coffee or making pre-workout before the gym.