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Our Focus for 2026
Our Focus for 2026 In 2026, KATSU Performance is focusing on consistency, safety, and long-term development. We believe real performance improvement comes from sustainable training, not shortcuts. Our programs are designed to match each athlete’s age, experience, and physical condition—while protecting their health and confidence. This year, our commitment is simple:• Train smart, not reckless• Build habits, not temporary results• Put long-term growth over short-term pressure
Ishii Koji
Jan 21 min read


Why Sleep Is the Most Underrated Key to Your Health and Performance
Sleep is the most powerful free investment in your health.Modern sleep science shows that sleep directly affects: Muscle recovery Fat burning Focus and productivity Emotional stability Immune strength In other words: When your sleep falls apart, so does everything else. Japan vs. U.S.: Who Sleeps More? Surprisingly, Japan ranks among the worst in sleep duration worldwide. Average Sleep Time 🇯🇵 Japan: ~6 hours 20 minutes 🇺🇸 U.S.: ~7 hours 10 minutes A one-hour gap may
Ishii Koji
Nov 23, 20252 min read
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