Bruce Randall, winner of the 1959 NABBA Professional Mr Universe provides insight into the bodybuilding diet.
Bruce is better known for going from 203 pounds to 401 pounds in 21 months to increase his strength. Then to reduce back down to 183 pounds in a 32 week period. He would compete at and win the Mr Universe title at 222 pounds.
Source: Muscular Development (Issue July 1970)
