Viagra !

Blood doping enhances performance but I don't think there are drugs involved.

Yes, adrenaline ! When a jerk pisses me off my adrenaline rises and BOOM i bust his face ! Hahah that was fun, but i will give you a phrase for advise..

"To have the ultimate performance, you must pay the ultimate price"

I let you figure the meaning by yourself...

poker players use vitamin b-12...

Clenbuterol
Natural IGF 1
Alberto
Cytomel

I use liquid criotine, but it doesn't work as well as criotine pills. If you take criotine pills AND protein powder, you will gain muscle fast and effectively. Nutrition is VERY important when working out, especially amino acids, which are in protein. Lifting weights is only 10 percent of it, 90 percent is nutrition and rest. If you give your body all the proper nutrients, your muscles will grow faster. Amino acids are found in protein and help muscles grow, so protein is essential to muscle growth. Criotine pills help you get stronger faster and protein powder helps you gain muscle.

Also, rest is very important. I work out monday, wensday, and friday. On monday, I do my biceps and triceps. On wensday, I do my chest and back. And on friday, I do my legs and shoulders. I rest on tuesdays, thursdays, and the weekends. Don't work out every body part a day, your muscles won't grow. If you follow a certain patern like I do and feed your body the right nutrients and rest, you'll start noticing your body changing in two or four months.

Nitric Oxide. Often used before lifting weights or working out. Supplies more oxygen in your blood stream and gives you more energy and a high mental focus. After taking this stuff for 2-3 weeks you won't feel it as strongly as you did in the beginning, so people often stop using it for a month before they start again.

Coffee!

Testosterone by injection or in gel form for topical application will increase lean muscle mass. The Chinese herb Ma Huang contains pseudoephedrine which is converted into epinephrine inside the body will raise your blood pressure and heart rate.

Well, PCP has been known to give users 'un-human strength'

And they usually seem hyper rather than cranked up.
So im sure men like weight lifters can use them without being noticed.