I was a mouth breather for 27 years, not sleeping well, not breathing well during workouts. My wife convinced me to try this because my nose collapses in when I take a deep breath, and dear lord have they changed my life. I would wear one 24/7 if it were socially acceptable. And I am open to leading the charge on that front. I feel more mentally sharp, able to push workouts harder, and feel more rested in the mornings.