{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Hypertrophy Past and Present","title":"050 Are circuits for hypertrophy the next big thing?","html":"<iframe width=\"100%\" height=\"180\" frameborder=\"no\" scrolling=\"no\" seamless src=\"https://share.transistor.fm/e/5a147193\"></iframe>","width":"100%","height":180,"duration":4262,"description":"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","thumbnail_url":"https://img.transistorcdn.com/CJhjWFKhcK0h4C11sAyS9S4btLA7VgbHkoTw7LPZHTk/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS8wNDVi/MjE1YzM4ZmVlYzZj/OWEwMTA1Y2QwOGY2/ZDU0ZS5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}