Wiktionary(1.00 / 1 vote)Rate this definition: quantity(Noun) A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items. You have to choose between quantity and quality.
When the body is making and using ketones we say that the body is in a state of ketosis. Ketosis begins after about 48 hours (2 days) or water fast for women, or about 72 hours (3 days) of water fast for men.
Try a few rapid keto techniques and eat specific low carb keto foods. Our quick start guide covers the basics to reach ketosis fast. 1  Keto FAQs and why it makes a difference in fat loss. 2  6 techniques to get into ketosis fast.