99% of pre-w/out supplements are complete SHIT. Most of them release more adrenaline into yoursystem which overtime create a lot of stress. I know I'm going to get negged for this but NO ONE will give me a half-intelligent argument backing up any of the supps here. If you think this is science you are just a fucking idiot. braindead.
Ideally, one should be really amped up for a workout. THis can be achieved by eating foods that optimize hormone production, these include animal fats which also contain cholesterol the building blocks for nutrients. RED MEAT, not chicken, BISON, ELK, GAME, FISH, RAW DAIRY, ORGAN MEATS.
THe only supplement I'd recommend is COD LIVER OIL for extra vitamin A for metabolism/thyroid.
Schisandra berries are good too but won't give oyu much of the boost if the first thing I mentioned is there but it's a great long term tonic herb, there are other good long term tonic herbs such as ashwagandha but these won't give you a pre-workout boost. All the supps people mentioned just SUCK. They will NOT GIVE YOU STRENGTH GAINS, they will temporarily AMP YOU UP, which A HEALTHY PERSON SHOULD BE ABLE TO DO ALREADY and which ppl on the verge of overtraining will suffer the negative consequences of from over acivating the Sympatho-adrenal system (SAS) and fucking up even more their HPA axis. go to mindandmuscle.net/forum to learn more about overtraining and its symptoms.
If you're not amped up, go to bed on fucking time, don't eat sweets at night, eat egg yolks and butter...take cold showers, practice osm emeditation to reduce stress, and take cod liver oil for the vitamin A, maybe som eiodine for extra metbaolism boost but be careful you don't need too much.