text: does anyone know why summer colds seem to be much harder to shake off than winter ones? i have a hypothesis in mind, but i want to hear what others have to say. i've had them in the past, and i've got one right now. no, it is not allergies. this isn't an annual thing.  any thoughts? it just seems like it takes longer to get over in the summer because its nice out and you want to be outside where as in the winter you can throw you blanket on you and chill cause its cold out you dont really care that youre stuck in the house