Abstract

The truth about weight management discovered by an entrepreneur—ex-Mitsubishi Corporation employee and national runner-up in triathlon!
"Why are you so capable at work, yet overweight?"
Weight management is determined not by effort, but by "design."

Book Overview
"I try to hold back on food to lose weight, but I can't keep it up."
"I fall into self-hatred when I eat snacks late at night out of work fatigue."
"I'm concerned about my health checkup results, but I'm too busy and exhausted to exercise."

To anyone struggling with these worries, I can say with absolute certainty:
Your willpower is not weak at all.

You are simply applying the worst possible strategy—one you would never adopt in business—to your own body management: relying on sheer grit and willpower.

Attempting to suppress your appetite through willpower on a night when you've already exhausted all your mental energy at work is a resource allocation strategy that is broken from the start.

This book is not a proposal for a new diet method.
It is a "design theory" for integrating a "system that operates you automatically" into your daily life without relying on willpower.

The Three Core Logics (Strategies for Not Striving, Not Suppressing)

1. Do not fight in uncontrollable situations like business dinners or drinking parties
Social gatherings are variables beyond your control. At drinking sessions, "forget the numbers entirely and enjoy yourself (no counting)!" The wise strategy is to quietly optimize only the daily routines you can control on your own.

2. Do not hold back on your favorite sweets or alcohol
Unless your weight is rapidly skyrocketing, your current diet and preferences are already "factored into your body's equilibrium." At your usual frequency, they are merely a net-zero action.

3. Eliminate only mindless "unconscious calories"
Do not cut out the things you love. Simply replacing low-value, wasteful calories—such as sizing up your meal just because it's free, or mindlessly snacking on nuts—with alternatives will cause your weight to naturally start dropping.

Recommended For:
• Those who achieve results at work but struggle specifically with managing their body shape.
• Those who have repeatedly failed or relapsed with past diets like low-carb restrictions or gym memberships.
• Those who tend to postpone tasks that are "important but not urgent" (such as health, learning English, or investing).
• Those who want a lifelong "mechanism for staying fit" without disrupting their busy daily schedules.

Author's Message
Weight management is the ultimate practice ground for the art of self-management.
Once you master this "Art of Design," you will be able to control not only your health, but also your work performance and every challenge in life.
Stop relying on willpower, and grab hold of the strategy to move yourself!
— Kazuhiro Miyamura (Representative Director & CEO, handsoming Inc.)

Author’s Information

Representative Director & CEO of handsoming Inc.
After graduating from Yokohama National University, he joined Mitsubishi Corporation, where he was involved in coal trading, business investment, and strategic planning within the Corporate Strategy & Planning Department of the group and division headquarters. alongside his primary career, he developed the "handsoming method"—a body management approach based on brain science and behavioral psychology that is logically sound, actionable, and sustainable. In 2023, he left Mitsubishi Corporation to found handsoming Inc. and assumed the role of Representative Director & CEO. He is also an active athlete, finishing 2nd overall in the 2019 Japan Ultra Long Distance Triathlon Championship in Nagasaki, and subsequently competing twice in the Ironman World Championship in Hawaii. His achievements also include a personal best of 2 hours and 44 minutes in the full marathon.