I'm sorry that you had an uncomfortable experience. If you take the time to learn how the metabolic pathways function, it's all very logical in why those things happen to some, and what your body is trying to tell you that you need. For example, when I first went low carb, I definitely had issues with heart palpitations and muscle twitches. But these typically go away given a little time and addressing the root cause. Electrolyte and fluid balance is key in that instance. Insulin and fat cells cause you to hold onto water and electrolytes, your body is trying to protect you and your kidneys from the excess blood sugar. When you lower your fasting insulin, your body may need to spend weeks excreting a lot of the waste, needing much more fluids. You often need to drastically increase your uptake of sodium, potassium, magnesium etc as well until your body and hormones stabilize. Once that happens however, your body is able to function more efficiently on lower levels of electrolytes, minerals and fluids, because they are not competing with insulin and sugar to get into the cell receptors where they are needed. Many carnivores actually don't need to drink often because they get much of what they need from meat. That's how cats on raw diets function. Though I try to avoid drinking during or after meals regardless because it raises the ph in the stomach and impedes digestion, which can contribute to constipation. Also eating too much protein and not enough fat, which softens stool. Burning ketones as fuel turns them into carbon dioxide and acetone, hence the smell. Our bodies literally turn weight into gas. Once the excess weight is gone, that typically goes away as well. For me, it was a comfort knowing that my body was doing exactly what Jehovah designed it to do, in order to improve my health and ability to serve him.