1 00:00:03,646 --> 00:00:06,920 ? [music] ? 2 00:00:10,661 --> 00:00:13,963 KIDS: Our World! 3 00:00:13,965 --> 00:00:19,270 EVAN: I... can... do...it! Whoo. 4 00:00:19,271 --> 00:00:22,753 Well, I’m continuing to train my body to be as fit as it can be. 5 00:00:22,755 --> 00:00:26,123 You know astronauts spend a lot of time on fitness too. 6 00:00:26,125 --> 00:00:28,860 Here’s a question for you. How much time do you think 7 00:00:28,861 --> 00:00:31,730 astronauts spend on fitness while in space? 8 00:00:31,731 --> 00:00:33,831 KID 1: 30 Minutes? 9 00:00:33,833 --> 00:00:36,801 KID 2: I like to get up and play for sixty a day! 10 00:00:36,803 --> 00:00:40,156 EVAN: Astronauts spend more than an hour a day on fitness. 11 00:00:40,158 --> 00:00:42,573 Why do you think that is? 12 00:00:42,575 --> 00:00:45,190 KID 1: Training for a space marathon? 13 00:00:45,191 --> 00:00:51,248 KID 2: To win the first outerspace body building competition! Grrr! 14 00:00:51,250 --> 00:00:54,651 EVAN: Exercising is a priority in space almost 15 00:00:54,653 --> 00:00:57,755 as important as eating and sleeping. 16 00:00:57,756 --> 00:01:00,691 Space exploration is a very important job. 17 00:01:00,693 --> 00:01:03,528 In order to do their job effectively, astronauts have 18 00:01:03,530 --> 00:01:06,665 to make physical fitness a high priority in their day. 19 00:01:06,666 --> 00:01:10,368 Doing this helps them stay healthy when they return from space. 20 00:01:10,370 --> 00:01:14,071 In space there is no gravity for their bodies to work against. 21 00:01:14,073 --> 00:01:17,541 You might be wondering, "Well why would I want to work against gravity?" 22 00:01:17,543 --> 00:01:20,478 EVAN: Well, your body working against the pushing force of 23 00:01:20,480 --> 00:01:23,581 gravity actually helps keep you fit and healthy. 24 00:01:23,583 --> 00:01:29,086 Without that opposing force in space our bodies become very lazy. 25 00:01:29,088 --> 00:01:32,590 And a lazy body returning to Earth is not a good thing. 26 00:01:32,591 --> 00:01:35,760 Hey Globey, maybe I can get some workout tips from our 27 00:01:35,761 --> 00:01:40,398 friends over at NASA Johnson Space Center. They help keep our NASA astronauts healthy. 28 00:01:40,400 --> 00:01:42,666 HEATHER VAN VELSON: Hi Evan. 29 00:01:42,668 --> 00:01:45,036 EVAN: I was wondering if mabe you could show us some of the 30 00:01:45,038 --> 00:01:47,451 equipment astronauts use to stay healthy. 31 00:01:47,453 --> 00:01:49,741 HEATHER: I’d be really happy to talk to you about the 32 00:01:49,743 --> 00:01:52,676 exercise equipment that they have in space. 33 00:01:52,678 --> 00:01:56,715 The astronauts have three different pieces of exercise hardware that they use. 34 00:01:56,716 --> 00:02:00,085 They have a treadmill, they have a stationary bicycle, 35 00:02:00,086 --> 00:02:03,721 and they have resistive exercise. 36 00:02:03,723 --> 00:02:07,791 This is called CVIS, it’s like the astronauts stationary bike. 37 00:02:07,793 --> 00:02:12,630 In space, since they don’t have gravity, they don’t need a seat sit on. 38 00:02:12,631 --> 00:02:15,400 The astronauts just let their bodies float. 39 00:02:15,401 --> 00:02:20,071 So, they have special shoes that can clip into the pedals. 40 00:02:20,073 --> 00:02:24,575 Like that. Now they won’t float away while their exercising. 41 00:02:24,576 --> 00:02:30,148 This is the ARED which is kind of like the astronauts weight lifting machine. 42 00:02:30,150 --> 00:02:34,351 Here on the ground, the way we do our weightlifting is we 43 00:02:34,353 --> 00:02:39,090 use barbells and dumbbells to provide resistance to make our muscles strong, 44 00:02:39,091 --> 00:02:42,426 but in space those barbells and dumbbells wouldn’t work 45 00:02:42,428 --> 00:02:45,296 because without gravity, they don’t weigh anything. 46 00:02:46,633 --> 00:02:51,101 So instead, they have to use this special machine, ARED. 47 00:02:51,103 --> 00:02:55,806 The way it works is it has these two cylinders and all 48 00:02:55,808 --> 00:02:59,610 the air is pushed out of those cylinders and that creates a vacuum. 49 00:02:59,611 --> 00:03:03,715 So the astronaut has to pull against the vacuum to lift 50 00:03:03,716 --> 00:03:07,318 the bar and which gives the bar a certain amount of weight. 51 00:03:09,121 --> 00:03:12,623 Behind me is TVIS. This is the treadmill. 52 00:03:12,625 --> 00:03:15,926 They use this treadmill to get their aerobic exercise 53 00:03:15,928 --> 00:03:18,930 which is good for their heart. And also they use it 54 00:03:18,931 --> 00:03:21,031 for strengthening their bones. 55 00:03:21,033 --> 00:03:24,803 In space without gravity, the astronauts would just float 56 00:03:24,805 --> 00:03:30,375 off of the treadmill, so they have to use bunjees like this one. 57 00:03:30,376 --> 00:03:34,445 And they attach those to a harness and these things will 58 00:03:34,446 --> 00:03:37,881 pull the astronauts down and keep them on top of the 59 00:03:37,883 --> 00:03:41,318 treadmill so can run and get a good workout. 60 00:03:41,320 --> 00:03:45,590 EVAN: The tread on that machine looks a little different than the one I seen at the gym. 61 00:03:45,591 --> 00:03:49,593 HEATHER: That’s right. This one has stainless steel slats on the belt. 62 00:03:49,595 --> 00:03:53,298 They did used to have plastic, but when it went up 63 00:03:53,300 --> 00:03:56,200 to space with all the astronauts pounding on it 64 00:03:56,201 --> 00:03:59,070 every time they ran, the slats, the plastic, little 65 00:03:59,071 --> 00:04:02,373 pieces of it would break off and float around in space and 66 00:04:02,375 --> 00:04:05,976 that’s really dangerous because it can get in the astronauts eyes. 67 00:04:05,978 --> 00:04:08,313 EVAN: So that’s a newer and improved version. 68 00:04:08,381 --> 00:04:10,748 HEATHER: Yes, we try to do that a lot , we capture 69 00:04:10,816 --> 00:04:13,818 mistakes that happen or damage and we try to make 70 00:04:13,886 --> 00:04:19,991 sure that doesn’t happen in the future by redesigning old parts or designing new parts. 71 00:04:21,026 --> 00:04:23,761 EVAN: It looks like you’re doing another exercise on that machine. 72 00:04:23,763 --> 00:04:27,431 HEATHER: That’s right, right now Dr. Lindgren is doing bicep curls. 73 00:04:27,433 --> 00:04:30,835 ARED also has a cable or an exercise rope that comes out 74 00:04:30,836 --> 00:04:34,138 of the platform and he can pull on that rope 75 00:04:34,140 --> 00:04:36,841 and do several different exercises. 76 00:04:36,843 --> 00:04:40,445 EVAN: NASA is currently preparing for missions back to the Moon and Mars. 77 00:04:40,446 --> 00:04:42,780 The lucky astronauts that get to participate in these 78 00:04:42,781 --> 00:04:45,150 missions will have to exercise in order to stay 79 00:04:45,151 --> 00:04:48,086 healthy during these long missions. Who will those astronauts be? 80 00:04:48,088 --> 00:04:51,088 Who knows, it could be you! 81 00:04:51,090 --> 00:04:55,433 ? [music] ? 82 00:05:00,828 --> 00:05:04,156 KIDS: Our World!