SHITLOADS of energy , better memory , increase verbal fluency , You should feel horny 24/7 and be humping everything in sight , i personally for example dont sleep a lot when on , i would work all day , workout like an animal , have sex 8 times a day , and still sleep 5 hours and wake up strong energetic and pumped as hell , its a feeling of tremendous power. U feel strong physically and mentally above natural limits , i personally blow the f**k up on test , i mean really blow , i would put on like 20 to 25 lbs in 8 weeks time , and almost keep them all , i would loose the water weight afterwards, like 3 to 5 lbs .Thats my experience.