Nose breathing during cardiovascular exercise can lead to easier nasal breathing during sleep.

“You can also set to being a default, nasal breather by forcing yourself to nasal breathe during low intensity cardio.”

“Keep nasal breathing on the low intensity cardio. It takes time to adapt but the sinuses dilate.”

“Another solution that is additionally beneficial is to restrict yourself to nasal breathing during low to moderate intensity cardiovascular exercise (which we should all be doing at least 180 to 200 minutes per week for health).”

“is to restrict yourself to nasal breathing during zone 2 cardio.”

“I should also mention as a tool that if you have a hard time being a nose breather in sleep, you can try doing your cardiovascular exercise, at least the lower-intensity cardiovascular exercise, through purely nasal breathing. The reason that doing nose breathing during cardiovascular exercise translates to being a nose breather during sleep is that your sinuses actually can dilate, they're plastic, and over time, plastic meaning they're malleable that is, and they can become wider.”

“The reason that doing nose breathing during cardiovascular exercise translates to being a nose breather during sleep is that your sinuses actually can dilate, they're plastic, and over time, plastic meaning they're malleable that is, and they can become wider.”

“my advice would be breathe through your nose while exercising unless you're in maximum effort pretty soon what you'll find is you actually can create more output than you would if you breathing through your mouth”