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Lung Health is an extension designed to help you test your lung capacity by holding your breath for 45 seconds. You can also set your own time to challenge yourself. Keep track of your lung health and make sure you're breathing well!

Features:
Default 45-second test: A simple way to test your lung health by holding your breath for 45 seconds.
Customizable timer: Set your own countdown timer to any time you choose.
Timer display: Live countdown in seconds and minutes.
Start/Reset functionality: Start the test with one click and reset it easily.
Offline support: Works without internet connectivity, making it convenient to use anywhere.
Test your lung health today and make sure you're breathing easy! 🌬️

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