{"podcast":{"title":"Hypertrophy Past and Present","slug":"hypertrophy-past-and-present-7348739","podcast_index_feed_id":7348739,"rss_url":"https://feeds.transistor.fm/hypertrophy-past-and-present","website_url":null,"image_url":"https://img.transistorcdn.com/K-Bbs36NPLcggyAOwgCH7pmT_RsmUDHR5fTfsSSbCXY/rs:fill:0:0:1/w:1400/h:1400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS8wNDVi/MjE1YzM4ZmVlYzZj/OWEwMTA1Y2QwOGY2/ZDU0ZS5wbmc.jpg","author":"Jake Doleschal","episode_count":59,"summary":"A deep dive into the science of muscle growth. Hosted by Chris Beardsley and Jake Doleschal, this podcast explores hypertrophy training through the lens of pre-steroid era bodybuilding and modern muscle physiology.","last_synced_at":"2026-07-06T16:19:22.926218+00:00","page_url":"https://stenobird.com/podcast/hypertrophy-past-and-present-7348739"},"episode":{"title":"050 Are circuits for hypertrophy the next big thing?","slug":"050-are-circuits-for-hypertrophy-the-next-big-thing","published_at":"2026-05-05T13:07:21+00:00","page_url":"https://stenobird.com/podcast/hypertrophy-past-and-present-7348739/050-are-circuits-for-hypertrophy-the-next-big-thing","show_page_url":"https://stenobird.com/podcast/hypertrophy-past-and-present-7348739","url":"https://share.transistor.fm/s/5a147193","audio_url":"https://media.transistor.fm/5a147193/20b75c4b.mp3","summary":"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","meta_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…","key_points":[],"chapters":[],"topics":[],"duration_seconds":4262,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/hypertrophy-past-and-present-7348739/episodes/050-are-circuits-for-hypertrophy-the-next-big-thing/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/hypertrophy-past-and-present-7348739/050-are-circuits-for-hypertrophy-the-next-big-thing.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}