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Infinite Isometrics - Henneman’s Size Principle: The Law of Bodybuilding

by The Dragon Door Research Group

For many decades, a ferocious argument raged in bodybuilding circles: Which is better for building muscle? Using heavy weights for short sets, or light weights for longer sets? Or somewhere in the middle? ​

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Infinite Isometrics - The All-or-None Law: How Muscles Really Work

by The Dragon Door Research Group

The all-or-none law states that: …when stimulated, nerve fibers invariably produce a response of a single, maximal amplitude. In the late 19th Century, the great American physiologist Henry Pickering Bowditch was studying the contractions of heart muscles in response to electrical stimulation.

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Kettlebells Are Not a Side Dish

By Nick Lynch, Senior RKC

Most of the time, I see people using a kettlebell as a side dish. This is similar to how people train their abs, like an accessory to something else.

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Infinite Isometrics - The Force-Velocity Relationship: “Law 1” of Strength

The Dragon Door Research Group

The force-velocity relationship is arguably the most important scientific principle in resistance training. It is literally Law 1 of strength. Yet—outside of a small cadre of athletes and sports scientists—it is barely known at all (and even then, it is typically poorly understood).

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HYBRID STRENGTH TRAINING Q & A Part II - Five More Questions

by Danny Kavadlo

Thanks for all the emails, DMs and messages about the results you’ve gotten from HYBRID STRENGTH TRAINING. Keep those progress reports coming! This week, we examine five more questions.

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Let Me Count the Ways: How the Isochain Has Transformed My 69-Year-Old Body and Being

By Laura Phillips, RKC

When I first read about Isochain isometrics and its apparent ability to heal and strengthen the body in a pain-free manner, I was hooked...

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HYBRID STRENGTH TRAINING Q & A Part I — The TOP 5 Questions

By Danny Kavadlo

Dragon Door and I recently hosted a live Q & A Session in the Hybrid Strength Training Users Group on Facebook. Many excellent questions - and surprising answers - were raised.

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Infinite Isometrics Part One: Isometrics and The Active Mind

By The Dragon Door Research Group

Isometrics looks (and feels) so different from the established conventional methods that, if you are a “group thinker” it will be almost impossible to accept the discipline from the get-go. But if you are one of those rare individuals with an open and active mind, we are hoping to invite you to explore a method of training that will change your life.

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Simple Bodyweight/Barbell Combos for Amazing Strength Part III — TARGETING MUSCLE GROUPS

By Danny Kavadlo

Bodyweight and barbell exercises can be combined in many ways. Today, we explore combos that target only one body part or muscle group. Old school strength training: arms, legs, chest, back and shoulders.​

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Interview with Jessica Renee Pino, RKC Team Leader

By Adrienne Harvey, Senior RKC, Senior PCC

I enjoy seeing my clients' and gym members' overall health and fitness improve with kettlebells. And I also enjoy seeing them get those "aha moments" if they've been struggling to perfect their technique on a movement...

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