# Concentrated Cardio: The Benefits of HIIT and ReHIIT Explained

Page: https://stenobird.com/podcast/strength-changes-everything-1330407/concentrated-cardio-the-benefits-of-hiit-and-rehiit-explained
Text version: https://stenobird.com/podcast/strength-changes-everything-1330407/concentrated-cardio-the-benefits-of-hiit-and-rehiit-explained.md
Podcast: [Strength Changes Everything](https://stenobird.com/podcast/strength-changes-everything-1330407)
Published: 2026-01-20T13:00:00+00:00
Episode link: http://www.StrengthChangesEverything.com
Audio file: https://episodes.captivate.fm/episode/05171a8d-8dc0-4d92-bb08-f0f1ed5153d9.mp3
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JSON: https://stenobird.com/v1/public/podcasts/strength-changes-everything-1330407/episodes/concentrated-cardio-the-benefits-of-hiit-and-rehiit-explained
Duration seconds: 1735

## Resource

Most workouts fail not because people are lazy, but because effort is misused. Amy Hudson and Dr. James Fisher continue the series on the principles of exercise design. In this episode, they cover concentrated cardio and why short, high-effort intervals create bigger physiological changes than long, steady workouts. Tune in to hear how brief bursts of intensity improve cardiovascular fitness, raise metabolic rate, enhance insulin sensitivity, increase muscle blood flow, and make everyday tasks feel easier, all while taking far less time than traditional cardio. Amy and Dr. Fisher discuss concentrated cardio and why it matters. You will learn exactly what concentrated cardio is, what it looks like in real training, and why it pairs so well with strength work. Dr. Fisher reveals the defining feature that separates concentrated cardio from other workouts. These are brief intervals above seventy five percent of maximal power or very close to all-out effort. The recovery periods are just as important because they allow you to hit that high level again. Why steady state cardio feels different from concentrated cardio. One approach keeps the same effort the whole time, while the other alternates between hard sprints and slowing down. Dr. Fisher covers why the benefits of concentrated cardio go far beyond just getting tired. Your VO2 max improves, your resting metabolic rate increases, and insulin sensitivity gets better. This means better oxygen use, more calories burned at rest, and real support for metabolic health. Amy shares why working with a personal trainer can change how you approach concentrated cardio. A good personal trainer helps you find the right intensity without guessing or overdoing it. That guidance builds confidence, keeps you safe, and makes every hard eff…

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## Transcript

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