Breathing constitutes the relationship between our inner emotional state and outer physical experiences. In fact, it is the only autonomic function that we can control consciously. Many researches have found an effective role of breathing exercises and techniques in reducing stress and anxiety, improving sleep quality and metabolism rate, and a lot of other healing and inspirational benefits. Breath coach app has these advantages: 1- You can measure your initial normal breathing time and respiratory rate. 2- Determine the total period of training and your desired target for respiratory rate per minute. 3- Then choose the period of time to reach the target, the app will start with your regular breathing rate, and increase it gradually to reach your desired rate after this period of time, then the app will continue with the same breathing rate till the end of the total period you specified in step 2. This gradual increment will help you to avoid lightheadedness associated with fixed rate exercises and make it smoother for you to adhere with the exercise as well. 4- The breathing cycle is auditory guided with frequencies thought to have favorable influence, so you can close your eyes, relax and enjoy.