both of these are fine of course. in #1 you're using present simple - so you're stating general fact or a habitual action in #2 you're using present continuous - so you're commenting on something that is actually happening right now. So of course if you were actually sleeping right now you wouldn't be talking about it with someone right? So while they both sound pretty good and normal the present simple "I feel comfortable when i sleep like this" would be better because it applies generally to all sorts of situations. Examples 1. I like running (present simple - indicating an ongoing habitual thing) / I am running (present continuous - now this is very different because i'm talking about something that is actually happening now) 2. I feel comfortable when i sit here (present simple - this is habitual and it's generally true, when i sit here i feel comfortable all the time and every time) / I feel comfortable sitting here (Present continuous - so we know that he is currently sitting there now and that it is comfortable, but it is not expressing the same thing as present simple because maybe next time they sit there they won't be so comfortable) I was just trying to add a bit more detail. thanks for dealing with me.

I would say that both are correct, but as James already pointed out, the tenses are different. The first sentence is using the simple present tense, while the second sentence is using the present continuous/progressive tense.

The first one is correct

안녕하세요 아름 Both these sentences seem correct to me! The only difference is the use of the helping verb “am” which is part of “I’m” in the 2nd sentence ! Hope this helps :)

Both 1st one is when you usually feel comfortable when you sleep like this and 2nd when you feel comfortable right now