You don’t need to bust out the measuring cups to properly portion out your food: A serving size of meat is roughly the size of a deck of cards or the size of the palm of your hand. Your entire fist should be the size of a serving of veggies (although the more, the better!). A serving of fat, such as butter or coconut oil, should be the size of your thumb. Your carb serving should be no bigger than what can fit in your cupped hand. For other ways to eyeball your proper serving sizes, check out What the Perfect Food Portion Sizes Actually Look Like.
Con: Results can vary depending on how much fluid you drink. By drinking more water, you dilute the concentration of ketones in the urine and thus a lower level of ketones will be detected on the strips. The strips don’t show a precise ketone level. Finally, and most importantly, as you become increasingly keto-adapted and your body reabsorbs ketones from the urine, urine strips may become unreliable, even if you’re in ketosis.
The How section is written in 3 parts, you can Flirt by adding more plant-based foods in your diet and start eliminating some animal products, or go Vegan, or go Superhero, which is a vegan diet that emphasizes certain foods more, and refrain from a few that the author lists. Most of her recommendations are grounded in scientific studies that she cites, or from her personal experience. She also includes many recipes to try out.