There used to be a separate area for this type of question but notice it isnn't there anymore.Was trying to find out about a pre workout supplement called Jack3D. I goggled and got all types of answers, some good some bad. I am a senior in very good physical shape with no ailments that i know of. I work out three or four days a week, stretching, upper and lower body weight work and cardio.I talked to a guy i ran into one month ago that has been taking one scoop a day pre workout and protien after the workout.I could not believe the difference in the look of the guy. He has tried everything and he said this was a miracle prework out drink.I'm not questioning the effects, i just want to know if it is safe. I don't need anything that jumpstarts the heart or gives me a jumpy feeling.Anyone know anthing about thishno: