The nervous system biology SYMPATHETIC vs PARASYMPATHETIC SYMPATHETIC (fight-flight): Aktif pas stress, ancaman, exertion tinggi HRV rendah, HR naik, tension bertambah Modern yoga fast-paced sering trigger ini PARASYMPATHETIC (rest-digest): Aktif pas relaxed, safe, recovery mode HRV naik, HR turun, tension release Yang seharusnya yoga achieve MUSCLE SPASM RESPONSE: Force + push cue triggers defensive contraction Muscle tighten sebagai proteksi, bukan release T

The biomechanics RECOVERY SCIENCE PRINCIPLE: Muscle grow selama rest, bukan selama training Nervous system reset butuh 24-48 jam antara high-intensity sessions Neurotransmitter (dopamine, serotonin) reset butuh recovery time PROBLEM: Culture "grind daily" tanpa recovery awareness Hasil: overtraining, plateau, injury, mood drops FIX: Rest yang informed by body signals, bukan schedule The 3 signs Sign 1 · Elevated Resting Heart Rate Cek resting HR pertama bangun tidu