>> MARK: IT'S ALMOST SWIMSUIT SEASON, AND EVERYONE WANTS TO LOSE WEIGHT.

I KNOW; IT'’S NO FUN TO GET BACK ON THE SCALE, BUT A LOT OF THAT WEIGHT IS STUFF YOU REALLY NEED.

YOU HAVE OVER 70 ORGANS IN YOUR BODY.

MOST OF THEM ARE IMPORTANT, AND THEY ALL WEIGH SOMETHING.

THE HEAVIEST ORGAN IN THE BODY IS YOUR SKIN.

IT WEIGHS ABOUT 25 POUNDS, DEPENDING ON WHETHER YOU COUNT THE LAYERS BETWEEN SKIN AND MUSCLES, WHICH ARE GROSS, AND IF YOU CAN COUNT THEM SOMETHING HAS GONE HORRIBLY WRONG.

YOUR BONES WEIGH ABOUT 20 POUNDS.

THE LARGEST IS THE FEMUR, IN THE UPPER LEG.

VERY IMPORTANT FOR REACHING THAT HIGH SHELF IN THE CLOSET.

LIVERS WEIGH 3 TO 4 POUNDS, DEPENDING ON HOW MUCH TIME YOU SPEND AT HAPPY HOUR.

UNLIKE SOME ORGANS, FOR LIVERS, BIGGER IS NOT BETTER.

WE ALL THINK WE HAVE BIG BRAINS, BUT THEY ACTUALLY WEIGH LESS THAN THE LIVER.

AN ADULT MALE BRAIN WEIGHS ABOUT 3 POUNDS.

FEMALE BRAINS WEIGH ABOUT 10% LESS, BUT THEY USE THEM WAY MORE OFTEN, SO IT EVENS OUT.

YOUR LUNGS ARE JUST BIG BAGS OF AIR, RIGHT?

STILL, THEY WEIGH ABOUT 3 POUNDS, WITH THE RIGHT ONE BIGGER THAN THE LEFT, SO IF YOU'RE FEELING WINDED, TRY BREATHING MORE ON THAT SIDE.

HEARTS WEIGH ABOUT A POUND.

WHEN YOU HEAR SOMEONE SAY, "“HE'’S GOT A BIG HEART,"” NO, HE DOESN'’T.

IT'S THE SAME AS EVERYONE.

UNLESS IT'’S AN ENLARGED HEART, AND THAT'’S A MAJOR PROBLEM.

KIDNEYS WEIGH ABOUT A HALF-POUND, WAY MORE THAN KIDNEY BEANS.

THEN THERE'’S A BUNCH OF OTHER STUFF THAT YOU REALLY NEED: SPLEEN, PANCREAS, THYROID, THINGS YOU NEVER SEE BUT ADD UP TO MORE WEIGHT.

THE ONLY WAY TO LOSE THEM IS SURGERY, SO I DON'T RECOMMEND IT.

SO AS YOU MAKE PLANS FOR SUMMER, REMEMBER, THERE IS SOME WEIGHT YOU REALLY NEED.

FOCUS ON THE OTHER STUFF.

YOU KNOW, CAREFUL DIET AND REGULAR EXERCISE, AND I CAN'T STRESS THIS ENOUGH, KEEPING SURGERY TO A BARE MINIMUM.