What BMI is healthiest for your heart?

>>> know about avoiding heart disease ? dr. lisa goldberg is a cardiologist at the new york university langon medical center . we've got our paddles ready to go. you both look great in red.

>> thank you.

>> thank you.

>> we studied a lot, doctor.

>> we will see.

>> ready? myth or fact, a handful of nuts is a heart healthy snack option.

>> i'm going to say fact.

>> i'm going to say fact.

>> you're both right.

>> oh, great. i thought it was a trick question .

>> almonds or walnuts.

>> unsalted?

>> unsalted, roasted or raw. myth or fact, you should exercise one hour daily to have a healthy heart.

>> myth.

>> myth.

>> right. do you know how many minutes?

>> 30 minutes , because star jones just told us.

>> that's right, 30 minutes a day. you don't have to do it all at once if you're a busy person. break it up into ten-minute intervals.

>> is it just getting your heart rate up? does it mean walking?

>> walking, dancing, cycling, whatever you want .

>> 0 minutes a day.

>> getting in and out of the pool. myth or fact, healthy bmi, body mass index , should fall between the range of 18.5 and 24.9.

>> fact.

>> it is a fact. 25% is overweight. greater than 30 is obese. you don't have to do the math. just go to the american heart association website and check out your bmi.

>> find out that number.

>> it's very easy. question four, myth or fact, you should take a vitamin d tablet for a healthy heart.

>> fact.

>> i'll go myth.

>> tamron, you're right.

>> you gave me a little wink like --

>> she's not going to give you the answer.

>> vitamin d is important for your bones. in fact, vitamin tablets don't prevent heart disease . you have to eat the vitamins in your food, like green leafy vegetables .

>> one more. i have to come back here.

>> myth or fact shortness of breath can be a sign of heart attack .

>> fact.

>> that's a fact. pain in the jaw, sudden collapse, unexplained fatigue. excellent.

>> tamron wins, 4-3.

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