I believe Adonis is a lifetime natural, and has never used. The question is, for Adam, "Will you remain natural for life, as you reach your genetic limits and age sets in"?
At 25, your metabolism drops. At 30, your test drops. At 35, I don't know what happens.
I'm 30 and I act, look, and feel 23 since I lost my chub. I still get carded anytime I buy a drink
But I definitely know my test levels have dropped in recent years.