050 Are circuits for hypertrophy the next big thing?

054 Strength vs Hypertrophy: Is Powerbuilding the Solution?

In this episode of Hypertrophy Past & Present, Jake and Chris analyse a Reg Park power-focused routine and use it as a starting point to discuss powerbuilding. The episode explores how lifters can structure training depending on whether they lean more toward bodybuilding, powerlifting, or a true middle ground. Key topics include: • Reg Park’s power routine from his Mr. Universe course • The difference between bodybuilding, powerlifting, and powerbuilding goals • How to modify a bodybuilding routine toward strength • How to modify a powerlifting routine toward hypertrophy • Why full body A/B routines may suit powerbuilding better than full body A • How Reg Park’s routine compares to a Chris and Jake's modern powerbuilding program

053 Progression Models and the Truth About Progressive Overload

In this episode of Hypertrophy Past & Present, Jake and Chris analyse a 1940s training routine from silver era bodybuilder George Eiferman, including his progression model. The episode explores how silver era lifters approached progression and how confusion around progression models has influenced the modern bodybuilding. Key topics include: • George Eiferman’s 1940s full body training routine • Why silver era bodybuilders often used wider rep range • Understanding progression as an input vs progression as an output • Why “progressive overload” is often misunderstood • Why strength gains naturally slow over time without indicating a plateau • The Hepburn progression model and why it works • How exercise selection influences practical rep ranges and loading strategies

052 Resting 2-3 minutes between sets isn't "optimal"

In this episode of Hypertrophy Past & Present, Jake and Chris follow up last week's episode on drop sets by diving deeper into the physiology of fatigue and rest periods. Using an extreme high-volume routine from Serge Nubret, the episode explores why different exercises, rep ranges, and proximity to failure dramatically change the amount and type of fatigue that accumulates during training. Key topics include: • Serge Nubret’s ultra high-volume, short-rest training system • The four major fatigue mechanisms involved in strength training • Why “2-3 minute rest periods” may be an oversimplified recommendation • How exercise selection changes optimal rest periods • How clusters and reps in reserve reduce fatigue accumulation • Why stretch-position exercises are more sensitive to muscle damage and calcium ion accumulation

051 The silver era perfected drop sets 75 years ago

In this episode of Hypertrophy Past & Present, Jake and Chris explore the origins and physiology of drop sets, beginning with a 1949 drop set routine from Henry J. Atkin. The episode examines how “multiple poundage system” training was originally performed in the silver era, before transitioning into a physiological breakdown of why modern drop set research may not support many of the claims made about the method today.  Key topics include: • Henry J. Atkin’s 1949 “multiple poundage system” • Why early drop set protocols may have been more intelligent than modern versions • A review of the recent drop sets meta analysis and systematic review • How short rest periods influence motor unit recruitment and fatigue • Why drop set studies may actually just be studies on rest periods • The difference between drop sets, clusters, and rest-pause training • How cardiovascular fitness changes recovery between sets • When drop sets may make sense for clients, and when they likely don’t

050 Are circuits for hypertrophy the next big thing?

In this episode of Hypertrophy Past & Present, Jake and Chris explore the use of circuits in hypertrophy training, starting with a 1960s circuit-style routine published by John McCallum. The episode examines how circuit-style training was used in the silver era, before transitioning into a physiology-first breakdown of when circuits might actually make sense for muscle growth today, and when they likely fall short. Key topics include: • A breakdown of McCallum’s Peripheral Heart Action (PHA) circuit routine • Why inserting low-fatigue exercises between compounds can improve performance • How circuits may reduce the exercise order effect across a workout • When circuits might outperform straight sets (and when they won’t) • How to structure circuits using clusters, low reps, and reps in reserve • The practical limitations of circuits in busy gyms