I have been experiencing a real bad case of just feeling like crap in the mornings. I have no energy at all, I have to force myself to go to physical therapy for my knee. I just don't feel good and I am hoping this is normal.

are you pre-op or post-op? If post-op, how far out are you?

I am pre op, 4 days into a 14 day liquid diet.

I think that’s pretty normal. I felt kinda bad for the first three days or so, then I started perking up. I had headaches in the beginning but I had already given up caffeine, so I’m not sure about the source of the headaches.

I remember having really bad headaches the first few days. It's the carb withdrawal. It often gets a lot better about four days in.

Yes, I had what is called the Keto Flu. Electrolytes help to curb this. I drank the broth of Progresso soup (strained out the rest) and that helped significantly. Good luck and this will get better shortly.

Yup, you are detoxing from all the crap you have been eating, and your body is shifting into ketosis.

I only had to do 7 days, by the 5-7 days everything made me nauseous. I drank water and Gatorade. It will all be worth it.

Thanks to all who replied, kind of sets my mind at ease. I know to keep my eye on the prize and this will all be worth it.

I am on day 3 and feel like absolute crap. The protein shakes taste awful to me (way too sweet) so I am hungry but also don't really have an appetite at the same time. Sticking mostly to gatorade, water, and luckily I can have one protein bar a day that is saving me right now. Keep reminding myself that this is the hardest part and will be worth it.