How to avoid mouth breathing while sleeping

[neverbegun4me]

I always thought I breathed throu my nose while sleeping but tonight I got drunk as shit at a party and people took photos of me that showed the opposite.
Is tape and shit like that effective?

 

[Giggling Elmo]

yop

 

[jattlife]

yea tape ur shit

 

[moreroidsmoredates]

Don’t be recessed

 

[AustrianMogger]

Never mouth breathed in my life except when i ran for 18km and was exhausted after for 1 min
So sleep on your side