CNN Vital Signs with Dr. Sanjay Gupta May 30, 2015 18:52:00
>> that's really good. how do you determine these portion sizes? >> we look at calories. so we know about how many calories we want an entree to have, about how many calories we expect from a dessert and whatnot, so that all factors into how much is placed into the pouch. >> did you say dessert? >> absolutely. >> what are some common desserts? >> you can't live without skert. it's a psychological experience. >> i like the way you think. there's no question that food is really important when it comes to the health of astronauts up in space, but equally, if not more important, is exercise. there...