A study from the School of Kinesiology, University of Michigan, found women who did exercise before a meal raised their ketone levels by 137 to 314 percent.
Another rule to follow to boost keto diet weight loss results has been advised by experts.
People vary the amount of carbs they eat on the diet.
One study cut down carb intake in adults to less than 21 grams a day and subjects experienced ketosis.
An article from the Harvard TH Chan School of Public Health said: “The ketogenic diet typically reduces total carbohydrate intake to less than 50 grams a day — less than the amount found in a medium plain bagel — and can be as low as 20 grams a day.
“Generally, popular ketogenic resources suggest an average of 70 to 80 percent fat from total daily calories, 5 to 10 percent carbohydrate, and 10 to 20 percent protein.”
If you are not on the keto diet there is another belly fat burning method.
It involves drinking a common breakfast drink.
A glass of orange juice daily can help boost belly fat burning.
According to experts, orange juice could help you lose an extra few pounds and even help you live longer.
Orange juice contains a high level of Vitamin C, which can help metabolise fat faster, making this vitamin great for weight loss.
Boosting the metabolism can help burn more fat throughout the day including while exercising and even at rest.