New release · Children's guide
Calm, Clear & Strong
A child-friendly guide to setting boundaries, using your voice, and handling difficult moments with calm words, clear choices, and steady confidence.
View on AmazonStories and guides for growth
Strength begins on the inside.
Books that use Brazilian Jiu-Jitsu to help children, adults, parents, and coaches understand pressure, practice courage, and build emotional resilience.
For childrenFor adultsFor coaches
The collection
A book for every stage of the journey.
From imaginative stories that help children find their footing to practical guides for adults and instructors, every title explores how we grow through challenge and connection.
Children's story
Jack Finds His Ground
A warm story about focus, friendship, and discovering that a wandering mind is not broken. It may simply need a place to land.
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Children's story
Jack Holds His Ground
A hopeful story about courage, change, friendship, and learning to stay true to yourself when pressure rises.
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Children's story
Jack Helps Others Find Their Ground
A story about leadership, kindness, and making room on the mat so others can feel capable, connected, and included.
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Resilience and recovery
From Trauma to Triumph
An exploration of the mental resilience Brazilian Jiu-Jitsu can develop through challenge, practice, and a supportive community.
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The Art of Self Discovery Through Brazilian Jiu-Jitsu
A guide to understanding how the discomfort of training can become a doorway to awareness, growth, and meaningful change.
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Featured training handbook
Brazilian Jiu-Jitsu White to Blue Belt Curriculum
A clearer path from the first class to blue belt.A structured handbook for students and instructors who want to understand the essential skills of the early Brazilian Jiu-Jitsu journey, organize training with purpose, and recognize meaningful progress along the way.
View the Handbook on AmazonFeatured title
Grapple with Emotions
Using Jiu-Jitsu as a tool to help children with emotional regulation.
This guide offers a relational approach to helping children understand emotions, build confidence, solve problems in real time, and discover calm through movement, practice, and trusted connection.
Emotional strengthSelf regulationEmpathyConfidenceProblem solving
Order the Book Why these books matter
Brazilian Jiu-Jitsu is physical practice with an emotional purpose.
01
Find calm
Breathing, movement, and repetition create opportunities to practice regulation under pressure.
02
Trust yourself
Small decisions on the mat help students recognize their voice, options, and growing competence.
03
Stay connected
Progress grows through safe relationships with coaches, teammates, parents, and the wider community.
04
Grow through challenge
Discomfort becomes useful when students have support, choice, and a clear path forward.
About the author
Joao Crus
Joao Crus is a Brazilian Jiu-Jitsu instructor, academy owner, author, and long-time specialist in teaching children. Coaches and school owners have turned to him for guidance in building children's programs that develop more than physical skill.
His work is grounded in a simple principle: relational first, physical second. Through books, curriculum, seminars, and daily teaching, Joao helps students meet pressure with greater awareness, confidence, and emotional regulation.
“The mat gives us a place to practice who we want to become.”
Joao Crus
For martial arts instructors
Explore the Curriculum Build a children's program with purpose.
Explore Joao's four-level Kids Jiu-Jitsu Curriculum with nearly four hours of structured instruction designed to help coaches teach with clarity and connection.