Flu, Colds, Fever and Chills

My husband has been sick for 9 days with a cold. He has fever or chills almost every day and an awful cough. We tried some stuff from the pharmacy which helped some but I think it is one of those things you just have to wait out. I hope he is feeling stronger soon. He exercises 30 minutes every day but has been holding it down to 10 minutes until he gets over this. We have heard of others suffering from the same thing.