POWERbreathe Classic is the first breathing trainer we developed and is still as popular today as it was when it was first introduced. This manual device is designed to be simple and easy to use. With 9 manually adjustable levels over time you will be able to strengthen your inspiratory breathing muscles. Helping you to increase your stamina and overall wellness. Our scientifically proven training regime of 30 breaths, twice a day typically takes only a few minutes and, used properly, you should start to see the benefits within just a few weeks. Inspiratory muscle training is proven by sports scientists and medical professionals to exercise and strengthen the muscles used to breathe in. This device is ideal for those who are not very active or have a breathing issue and would like to start breathing training. It offers a ‘light resistance’ to breathing in, created by the adjustable spring loaded valve. The range between each training level is quite small which means that as your breathing muscles become stronger and you move up one of the training levels by increasing the resistance, this small increase in cmH2O makes it more manageable. This ‘load’ training is similar to weightlifting, and in the instance of this ‘light resistance’ device, provides a level of load setting (weight lifted) in increments of 10cmH2O, from 10cmH2O to 90cmH2O.