A lung exerciser is a medical breathing apparatus designed for enhancing lung capacity and strengthening breathing muscles. Also known as a lung breathing exerciser, lung exercise device, and lung exercise machine, this medical breathing apparatus is designed for practicing deep breathing in order to maintain healthy and strong lungs. A lung breathing exerciser is recommended for patients who need recovery from surgery, for patients with asthma, and for individuals who want to enhance their breathing capacity. The medical breathing apparatus is designed for enhancing breathing capacity through slow and deep breathing. When you inhale through the mouthpiece of this medical breathing apparatus, you can breathe through the chambers or balls within this medical breathing apparatus for exercising your lungs in order to enhance your breathing capacity by taking in more oxygen for efficient breathing. A lung exercise machine can help you avoid acquiring a lung infection and can assist you in recovering from a case of pneumonia or complications from a chest or abdominal surgery.Â