If you want your stomach to have that rippled, muscular look, you'd better first hope that you inherited the right genetic material, because achieving this look is difficult.
And, for some, it's impossible - no matter how hard they try they'll never develop so-called "washboard abs" or a "six pack"- simply because they don't have the genes for it.
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Along with good genes, you also need a lot of spare time to spend working out in the gym and analysing the food you eat.
To develop washboard abdominal muscles, women need to lower their total body fat to 15 percent to 18 percent, and men can only carry 7 percent to 10 percent body fat.
Healthy women usually have about 21 percent to 36 percent body fat, while men generally have between 8 percent and 25 percent.
You'll also have to do a lot of strenuous aerobic exercise, strength training for the whole body and concentrated work on the abdominal and back muscles.
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