SIX-PACK ABS FOR STRENGTH OR VANITY?

ARE ROCK-HARD ABS A SIGN OF BEING FIT? DOES SIZE SHOW STRENGTH? AND WHEN DID VANITY BECOME A TRAIT EVERY MUSCLE MARY MUST POSSESS? IN THE EVER EVOLVING IDEAS OF WHAT’S FIT, WHAT’S NOT, TELEVISION’S FITTEST FOUR SEPARATE FICTION FROM FACT