The time it takes to achieve four- or six-pack abs depends on a number of factors, including fitness level, diet and genetics. To achieve and maintain sculpted abs, one must undergo a stringent diet and exercise plan. Achieving sculpted abs could initially take several months of consistent workouts.
To maintain a six pack, a person must have low amounts of body fat. According to experts, six-pack results can be achieved at about 12 percent body fat for males and 18 percent body fat for females. Crunches, planks and leg lifts are exercises that directly trigger the abdominal muscles. Cardiovascular exercises are also very important to developing four- or six-pack abs.