Bottom line, I'm doing paleo and I'm losing weight rapidly but feel terrible and I'm extremely irritable with friends and family. By terrible I mean: constant hunger and distracting cravings, inability to concentrate, sleepiness, shakiness and occasional cold sweats, notable weakness during workouts, both running and lifting. I run 2+ hours and I expect to be weak at first and kind of view this as forcing my body to adapt. My only goal is weight loss (in first week went from 200 to 190). So the question is, how long does feeling terrible usually last? And also, often when I eat protein now, my stomach ties itself into a know and I have to wait by the sink and clench my teeth because I feel like I'll throw it back up. I'm not nauseous at all, but my stomach rebels, almost like after taking a shot of super-hard alcohol. This never happened to me before. What's the fix for this?
More details follow for those interested.
Diet: I was a lifetime super-high-carber, not by design, just by impulse. Seven days ago I started on a diet of (pretty much only) tuna fish, skinless chicken, green leafy vegetables. No cheat days, no starches. No fruit, as little fat as possible, no eggs, vitamin supplements allowed. Yes I know paleo lets you eat fats but I'm trying to create a calorie deficit and fill myself with low-calorie greens for satiety, also to lower cholesterol.
Exercise: traditionally I've been only a high mileage runner. My mileage had fallen off (5 slow miles a week?) but in the week before I started this diet I started doing 50+ per week, running every day. (Spare me lectures about chronic cardio, this part isn't negotiable.) But the fatigue I'm feeling now is very different from what I felt before when I had a profound high mileage ramp-up. To avoid muscle wasting as much as possible, I've begun an upper body regimen as well. Never did any upper body before. Now I'm doing curls and bench presses along with pushups or situps every morning and night. I expected to be sore from this although one thing my new regimen has NOT done is make me sore, oddly enough. (It did but only the first couple days.)
Finally, I've also recently gone cold turkey on caffeine, although I've done this before and the feeling crappy from no caffeine lasts only 3 days. I'm 7 days out.
When will I start feeling, not even good, just not horrible?