Fitness and health involve constant self-tutoring. The tutor mentions zinc.

Apparently, zinc is lost in sweat: during athletic performance, therefore, a person might likely lose some.

I take zinc supplement – not every day, but most days. I just take 25mg.

Source:

www.insidetracker.com

doublewoodsupplements.com

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.