https://community.usms.org/swimming/f/general/12322/help-me-increase-my-substanabilityHi guys, Im 19 years old, male, non-professional but want to be pro swimmer. I usually swim freestyle and breaststroke, i have some problems but i dont know any coach to consult, hope you guys can help me out. I always go fast and intensely insteaden-USTelligent Community 12