I too now have the same crap--thanks to my husband, who had it last weekend. And I get it on my scheduled vacation days, thank you very much.
I had the same thought--the body temp increase might help ease the congestion but a coughing fit and sore throat spell came on late this afternoon that nixed the idea of even going to the gym to lift weights. I also got several exercise DVDs in the mail today and thought about doing one of them. Yeah, well, maybe tomorrow.