three modes of persuasion (Aristotle's)
ethos: ego/advertising
pathos: based on emotions
logos: based on facts/percentages etc
my arguments:
ethos based:
use famous body builder stories such as Schwarzenegger
if applicable use sources such as NCAA, and other large athletic groups (IFBB for bodybuilding)
argument: even 'the most idolized fit and muscular guy has suffered with muscle dysmorphia and has come forward with his mental health issues to help others who might be feeling the same"
using my own experiences with this topic: conversations with fitness trainers and physical therapists
pathos:
appeal to guilt and fear
use suicide/bad mental health stories to affect their emotion
attempt to make them feel something for those athletes who suffer from other mental health conditions
logos:
use percentages of how many people develop bad mental health due to dysmorphia/ other issues
show the improvement of this through therapy/ mental health aid for lifters
look into scientifically based research on mental health and the gym