From a personal experience, moaning means you are having a good time...having sex. So, there you have it. Moaning usually comes from having sex passionately.
A moaning type of sound can also be made by snoring. But the primary sound of snoring occurs when you inhale. Groaning occurs when you exhale. Some people can make a harsh, shrill, creaking sound when they breathe
this might help but I don’t exactly know what happens when you moan
lifestyle is not healthy because he is not eating healthy foods and doesn’t exercise as much which causes his body to not be active and could possibly cause breathing problems.