O2 — Breath Hold Apnea Trainer — ASO

By Denis Tronin on AppTrack Ninja.

Freediving, Breathwork & Sleep

Train your breath like a professional freediver. O2 is a science-based breath-hold training app that helps you extend your breath-hold time, build CO₂ tolerance, and improve mental focus through progressive training protocols. PROVEN TRAINING METHODS • CO₂ Tables — Build carbon dioxide tolerance with decreasing rest intervals • O₂ Tables — Extend breath-hold capacity with increasing hold times • Box Breathing — The 4-4-4-4 technique for stress relief and focus • Progressive difficulty levels from beginner to advanced BUILT FOR PERFORMANCE • Designed for freedivers, spearfishers, swimmers, sur…

Categories: Health & Fitness, Sports

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