Do you mean literally - when you are hot? Or do you mean that you are feeling under pressure? (In English the expression "feeling the heat," usually means that a person feels under pressure. If you mean that you are feeling hot then, we have informal expressions that refer to sweat rather than heat (but they mean that somebody is feeling really hot); 1) I am sweating like a pig. 2) I am sweating cobs. When somebody feels hot due to illness (i.e. they have a fever), we say: "I am burning up." If, by feeling the heat, you mean "under pressure," then we have a couple of informal expressions, both of which start with under: a) I am really under the gun at the moment b) I am really under the hammer at the moment.

You're welcome, Renan

Jerry, Louis, thank the both of you, I'm a little bit with Jerry regarding the "sweat like a pig" thing, but I think "I'm boiling" sounds just right for me to use in a translation I'm working on, so thank you very much, both of you

How many ladies do you know who want to be viewed as swine? I'm speaking of the US. Maybe it's different in England. Maybe some ladies will weigh in on this?

In Manchester we say "I'm boiling!" or "its boiling here!" We also say, "I'm sweating my bollocks off." And "sweating like a pig" is definitely not just used by males. Public or private. Maybe to traditionalists...