Keto Flu Symptoms

I am having bypass surgery on 8/24. Yesterday I started my 2 week liquid diet. I'm already feeling run down with a headache and body aches. I know this liquid diet will put me into ketosis but should I start feeling like I have the "keto flu" on just day 2 of liquids?

Are you in caffeine withdrawal?

I don't think so. I'm not a coffee drinker and it has been a really long time since I've had any Diet Coke.

It does sound like keto flu then.

Yep, 2-3 days is normal. Make sure you drink, drink, drink - preferably water - it will make a difference and you'll feel so much better in a day or two!