How Much Muscle Did Jeff Nippard Gain In 14 Months Naturally?

Muscle growth potential is primarily determined by genetic factors, varying between individuals. From January 2024 to March 2025, natural bodybuilder Jeff Nippard set out to challenge the limits of natural muscle growth with a meticulous, year-long experiment. Had the science-based hypertrophy expert maxed out his drug-free gains after 15 years of lifting? Over his 14-month physique transformation, Nippard bulked for six…

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