Lung Breathing Exercise

This Chrome extension guides a simple breath‑hold exercise to provide a quick, at‑home estimate of lung capacity and relative oxygen level. Use the built‑in timer and clear instructions to perform short breath‑hold tests and track your results over time. The tool is designed for ease of use and quick self‑checks rather than clinical diagnostics.

Important: This extension does not offer medical accuracy or diagnosis. If you have respiratory symptoms, existing lung conditions, or any concerns about your breathing, seek professional medical advice or visit your health center.