All top athletes know the importance of developing stronger lungs to boost their performance. The Airofit Pro is a smart breathing trainer that combines with your iPhone to bring you lung strengthening exercises. You will just have to use it 10 minutes a day to see results.
The Airofit respiratory trainer provides you with custom training based on your age, gender, size, and fitness. It is designed to increase your aerobic capacity and boost your recovery through improved muscle oxygenation. The device has adjustable resistance levels and sends the data to your smartphone via Bluetooth.[where to get it]