when you’re sick with a cold/flu why do you feel better in the morning but progressively feel worse throughout the day, particularly at night?

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when you’re sick with a cold/flu why do you feel better in the morning but progressively feel worse throughout the day, particularly at night?

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Because fighting off an infection takes a tremendous amount of energy for your body so as the day goes on you’re compounding the feeling of being ill with the feeling of exhaustion which just makes everything worse

This is really not a universal experience.

I’d wager more people actually feel worse in the morning during a cold.

It has to do with cortisol, a steroid which affects your immune system. Steroids like cortisol push down your immune system (relatively, it’s not huge) and your immune system’s response to disease is what causes the majority of your “sick” symptoms like fever, chills, body aches, etc. At night your cortisol levels are low and they spike shortly before you wake up in the morning (this has nothing to do with you being sick but is part of your normal day/night body cycle). That means your viral symptoms will typically be/feel worse at night.

Weird. I’m the opposite. Worse in the morning and improve across the day. Fighting fit in the early evening and get to bed early. Wake up worse. Mucous on my chest is my enemy. I’ve not been sick for years, though.

I wake up feeling like there’s a knife in the back of my throat and then gradually feel better throughout the day.