want to be a sronger man

[jasonli]

Recently I begin making exercises, to improve power and endurance.
Somebody introduce me some products, like USPlabs JACK3D micro, Dymatize Xpand 2x, S.A.N Fierce Domination, which one do U like best?
Which function is best? would U pls give me some recommendations?

[ansonlee]

Xpand 2x is ok, I used it, feeling more powerful than before. Maybe the function of Agmatine Sulfate?