This movement is similar to deep squats but without the loaded barbell and will target the things and greatly increase lung capacity. (fitnessandpower.com)
Regular aerobic exercise is a great activity for improving lung capacity and health. (thoughtco.com)
More pot smoking was associated with increases in lung capacity up to a level equivalent to about one joint per day for seven years or one joint per week for up to 49 years. (scientificamerican.com)