“Mune wo Kariru”: A Sumo Training That Teaches Both Strength and Compassion

Trivia
               

Supervisor・Tsuyoshi Mizuguchi

Former sumo wrestler Shoho Tsuyoshi (real name: Tsuyoshi Mizuguchi). He belonged to the Kasugayama stable, made his debut in 2004, and rose to the rank of Makushita East 4. He also performed the Yumitori-shiki (bow-twirling ceremony) on behalf of Yokozuna Hakuho.
After retiring, he has been actively promoting sumo culture both in Japan and abroad through organizing training sessions, producing the YouTube channel "Osumo Gucchan-neru," and hosting sumo experience events.
He appeared as the character Entori in the Netflix drama *Sanctuary* and has also participated in stage performances.
Currently, he organizes inbound sumo events and shows for international visitors, and also works as a personal trainer, sharing the appeal of sumo while supporting people’s health and well-being.

In the world of sumo, the phrase “mune wo kariru” (borrowing the chest) describes a practice where a junior wrestler challenges a stronger opponent to grow. It is not just physical training but a cultural lesson in respect, humility, and courage. This concept reveals how sumo combines physical strength with deep values rooted in Japanese tradition.

The Basic Meaning of “Mune wo Kariru”

“Mune wo kariru” refers to a practice where a junior or weaker wrestler throws their full weight into the chest of a senior wrestler, who allows them to attack. The stronger wrestler does not push back but instead supports and receives the impact so the weaker wrestler can fully exert themselves.

Through this practice, a wrestler experiences the difference in strength and body control firsthand. More than just physical training, it also teaches etiquette and humility, which are essential values in sumo.


The Cultural Significance in Sumo

In sumo, passing down techniques and spirit from seniors to juniors is fundamental. Borrowing the chest symbolizes the hierarchical relationships and respect for etiquette within sumo culture. The junior wrestler expresses their willingness to learn, while the senior wrestler accepts the role of nurturing.

This is not a simple clash of bodies but a training based on trust. The one lending their chest adjusts their strength to foster growth, while the one borrowing must attack with full force yet never forget gratitude.


The Flow of Training

StageActionPurpose
GreetingBow before asking for practiceLearn proper manners
Initial impactCharge with full force into the chestLearn power application
PushingContinue pushing forward while pressing the chestStrengthen lower body
ReceivingSenior wrestler holds steady to absorbEnsure safety and prevent injury
ThanksBow at the end to show gratitudeExpress respect

Though simple in form, this sequence is an invaluable learning opportunity for beginners, teaching body usage, force application, and proper etiquette.


Lessons Learned from “Mune wo Kariru”

The lessons gained from this practice extend beyond physical improvement.

AspectContentEffect
TechnicalExperience impact and footwork in close contactSharpen practical sense
PhysicalRepeated drills train the whole bodyImprove stamina and explosive power
MentalLearn courage to challenge and gratitude toward seniorsBuild confidence and humility

It is not just practice—it is a form of training that shapes both body and spirit.


Comparison with Other Training

“Mune wo kariru” differs from other sumo training styles in its purpose.

Training styleFeatureDifference from “Mune wo Kariru”
Moshi-ai keiko (winner stays on)Wrestlers take turns competing, winner continuesFocuses on winning and losing
Butsukari keiko (repeated charges)Wrestlers collide repeatedlyEmphasizes endurance and mental toughness
Mune wo KariruSenior only receives, junior attacksFocuses on learning and nurturing

Thus, “mune wo kariru” is a special form of training focused on learning rather than competition.


The Broader Spiritual Meaning

The phrase is also used outside sumo. It represents an attitude of seeking to learn from someone more experienced.

For example, when a younger employee asks for guidance from a senior colleague, or when an athlete trains with a stronger partner, one can say they are “borrowing the chest.” It embodies both the courage to challenge and the respect toward the other person.


Understanding for Beginners and Foreigners

For beginners, “mune wo kariru” offers an experience of both the severity and warmth of sumo. For foreigners, it serves as a gateway to understanding Japanese culture and values.

PerspectiveMeaningWhat is experienced
BeginnersLearn basic sumo movementsAcquire manners and build physical foundation
ForeignersConnect with Japanese traditionUnderstand sumo spirit and culture
Experienced wrestlersFulfill the role of nurturing juniorsLearn responsibility as a mentor

In this way, “mune wo kariru” provides growth opportunities for all involved.


Conclusion

“Mune wo kariru” is the practice of challenging a senior wrestler who receives without resisting, allowing the junior to grow. It is not only about building strength but also about cultivating respect, etiquette, and spirit.

For beginners, it is a first step into sumo. For foreigners, it is a cultural key to understanding Japan. Knowing this phrase reveals both the depth of sumo and the essence of Japanese values.

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