Mike Mentzer Heavy Duty Journal Pdf Better May 2026

Mike Mentzer (1951–2001) was an American professional bodybuilder (IFBB Mr. Universe 1979) and a radical theorist of high-intensity training (HIT). He broke from his mentor Arthur Jones (founder of Nautilus) to create his own system, , which argued that most bodybuilders train too long, too often, and with too many sets.