I think 'collect' = correct.
I feel like I am sweating. Eventhough I am staying just still here.
As you are using a verb, many would prefer 'I feel as if...'. However, in modern English, many would use 'like' there. The sentence is strange- you should know whether you are sweating or not, but it's correct. 'Even though' is two words. I'd say:
I am sweating here even though I'm completely still.
