“HIIT is still too soon for me.” If that’s how you think, you may be unconsciously letting go of the “life-optimization route” your body as hardware could unlock. What science has proven is an extremely rational fact. Rather than casually jogging for 30 minutes, just 4 minutes of precise high-intensity exercise dramatically improves brain cognitive function and cuts all-cause mortality risk by over 40%. But most HIIT flooding the market is biased toward designs that ignore beginners’ “neural cost.” Excessive heartbeat, unbearable breathlessness. The moment the brain reads that as a “threat to survival,” the blueprint of habit collapses. That’s why I present an “initial onboarding program” to safely reboot sleeping bodily functions. Based on research insights from the University of Queensland, it’s a blueprint to protect the nervous system while maximizing mitochondrial output. You may feel “this load doesn’t even count as HIIT,” but in modern physiology intensity is defined as a “subjective relative value.” The essence of HIIT is not physical ferocity itself, but “driving the heart rate above 80% of that individual’s limit and triggering the desired chemical reactions in the nervous system.” Copying athletes with an undertrained body before the foundation is set is not design. It’s a load mismatch—equal to “self-harm” against the body. What this protocol gives you is an asset beyond muscle. • Brain override: BDNF (brain-derived neurotrophic factor) is secreted, and you get deep focus with the noise gone. • Metabolic bug fix: via the afterburn effect (EPOC), the body stays in burn mode even after exercise ends. • Willpower conservation: because it finishes in a short time, you don’t waste the scarce resource called “effort.” You don’t need to aim for 100% from the start. What matters is taking the first design step: sending an “awaken” command to a sleeping nervous system. Your body still holds untouched potential. ※Full how-to is explained in the replies below

A video posted by @hosomacho1 on X (formerly Twitter) (February 15, 2026 ・ その他 ・ 2:03). Watch and download it on XCLYP.