Cardio, Diet and Weightlifting. If it's not in your genetics it won't happen from diet alone. You need to be excerising at least 5 days a week to reach a goal like this.
Also don't get discouraged I've been working hard for 6 days a week 3 months straight and dropped from 20% body fat to 10%. It just takes hard work and dedication.
The average percent of body fat on women is between 10 and 13 percent.
10%
swimming
According to various website it is best to be at under 10 to 15 percent body fat when it comes to body fat. However this is depending on the age and the weight and height of the person.
Again, it is essential to know more then the question provides data on. Women need between 12 an 15 percent Essential body fat. Female athlletes carry about 18 percent bodyfat, healthy women carry about 26 percent, and an obese woman has 32 percent of more body fat. Men are considered obese at 25 percent Male athletes carry about 10 percent body fat and the survival level or Essential for men is at least two percent. When bodyfat falls below Essential levels the body's organs begin shutting down.
12-8 percent body fat
You probably don't have 8 percent body fat. Usually people begin to see their abdominal muscles around 10 percent. Go back and measure your body fat with a reliable measuring tool. The biometric tools are not very reliable so I'd recommend skin calipers.
The average percentage of body fat for women is 21 to 31 percent. The average for men is 18 to 24 percent. The body fat can change depending on if you are athletic or not.
The body fat percentage is too low (below 10 percent). Body fat produces estrogen, which is needed to go through the monthly menstrual cycle.
Fat supplies 60 percent of the body's energy
In women a healthy body fat percentage ranges from 21 percent to 33 percent. In men, a healthy percentage is between 8 percent and 25 percent.
Percent means 'out of one hundred' so to say that someone's body is 20% fat means that for every 100kg, 20kg will be fat. If the person weighs 50kg, 10kg of that is fat. If you know what percent body fat you are, and how much you weigh, then your mass of fat is 'percent fat divided by 100 then multiply by your mass in kg.'