The androgen receptor audio has someone I know asking me “so how do I get this?” “Must I buy an audio go put on muscle like you’re doing?” “Your biceps do look and feel bigger” etc.
Now that’s an expensive audio BUT a GREAT audio you can have them test is the after work out recovery audio 2.0 anyone who does hardcore workouts or hardcore enough to get soreness WILL see the effects of the audio. I was able to do legs 6 times this past week. Everyday I felt like I had a week in between leg workout.
Also, I’ve down your path in trying to prove to others things work but it doesn’t work like that. Don’t get me wrong I do gentle pushes but lay off them for a bit and they’ll slowly come around if they see something of interest.