So how will you know when you’ve gotten into a fat-burning state and can begin to reap the health benefits of burning ketones for fuel? Your body will offer clear signs of ketosis along the way. Some are welcomed (Hello, weight loss, lower blood sugar—i.e. blood glucose––levels, and reduced bloating!), while others are more challenging. All are signs that your body is making the transition from relying on glucose (carbs/sugar) for energy to using fat and ketones for fuel.