NFL: League Warns Players Eating Meat From Mexico and China Could Cause Positive Drug Tests
In a memo sent to players, the league and its players association said that meat in the two countries may contain clenbuterol, which is a banned performance-enhancing substance.
https://en.wikipedia.org/wiki/Clenbuterol
In a memo sent to players, the league and its players association said that meat in the two countries may contain clenbuterol, which is a banned performance-enhancing substance.
https://en.wikipedia.org/wiki/Clenbuterol