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    <created-at>Mon, 17 Dec 2007 14:26:12 -0800</created-at>
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    <tags>DIY, Instructional, tutorial, Do It Yourself, Tips, Essential Skills, Learn to, jumping jack, exercise, work out, workout, home, calisthenics, cardio, cardiovascular, aerobic, aerobics</tags>
    <title>How To Do a Jumping Jack</title>
    <description>
      <![CDATA[This elementary school phys-ed standby deserves a spot in any workout warmup.]]>
    </description>
    <permalink>http://www.howcast.com/videos/470-How-To-Do-a-Jumping-Jack</permalink>
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    <duration>66</duration>
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    <rating>9</rating>
    <username>speakeasy</username>
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    <ingredients>
      <ingredient>
        <![CDATA[Comfortable workout clothes]]>
      </ingredient>
      <ingredient>
        <![CDATA[Athletic shoes]]>
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    <markers>
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        <id>12409</id>
        <position>1</position>
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        <type>Step</type>
        <thumbnail-url>http://img.howcast.com/system/thumbnails/470/15.jpg</thumbnail-url>
        <title>Stand in position</title>
        <textile-text>
          <![CDATA[Stand upright with your feet together and your arms by your sides.]]>
        </textile-text>
        <text>
          <![CDATA[<p>Stand upright with your feet together and your arms by your sides.</p>]]>
        </text>
      </marker>
      <marker>
        <id>12410</id>
        <position>2</position>
        <timemarker>20</timemarker>
        <type>Step</type>
        <thumbnail-url>http://img.howcast.com/system/thumbnails/470/20.jpg</thumbnail-url>
        <title>Move feet out, arms overhead</title>
        <textile-text>
          <![CDATA[In one jumping motion, move your feet out to the sides until they’re approximately shoulder width apart. At the same time, arc you arms overhead until your hands touch.]]>
        </textile-text>
        <text>
          <![CDATA[<p>In one jumping motion, move your feet out to the sides until they’re approximately shoulder width apart. At the same time, arc you arms overhead until your hands touch.</p>]]>
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        <type>Step</type>
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        <title>Jump back</title>
        <textile-text>
          <![CDATA[As soon as your feet hit the floor and your hands touch (in unison), jump back to your starting position by bringing your feet together and arcing your hands to your sides.
]]>
        </textile-text>
        <text>
          <![CDATA[<p>As soon as your feet hit the floor and your hands touch (in unison), jump back to your starting position by bringing your feet together and arcing your hands to your sides.</p>]]>
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        <timemarker>41</timemarker>
        <type>Tip</type>
        <thumbnail-url></thumbnail-url>
        <title></title>
        <textile-text>
          <![CDATA[To speed up your jumping jacks, stay on your toes throughout the jumps.]]>
        </textile-text>
        <text>
          <![CDATA[<p>To speed up your jumping jacks, stay on your toes throughout the jumps.</p>]]>
        </text>
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        <id>12425</id>
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        <title>Find rhythm</title>
        <textile-text>
          <![CDATA[Find a rhythm that you can sustain for 25 to 50 jumps.]]>
        </textile-text>
        <text>
          <![CDATA[<p>Find a rhythm that you can sustain for 25 to 50 jumps.</p>]]>
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      <marker>
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        <timemarker>51</timemarker>
        <type>Fact</type>
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        <title></title>
        <textile-text>
          <![CDATA[Jack LaLanne popularized the jumping jack in America, but history suggests the inventor was another Jack: John “Black Jack” Pershing, a tactical officer from West Point in World War I.]]>
        </textile-text>
        <text>
          <![CDATA[<p>Jack LaLanne popularized the jumping jack in America, but history suggests the inventor was another Jack: John “Black Jack” Pershing, a tactical officer from West Point in World War I.</p>]]>
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        <title>How To Strengthen Your Knees</title>
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          <![CDATA[Your knees support much of your weight. Exercise can keep your knees healthy by strengthening the muscles surrounding the joints. ]]>
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          <![CDATA[Work your traps to develop a broad back—or at least strengthen the muscles that maintain good posture to help you fake one. ]]>
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        <title>How To Do the Upward Facing Dog Pose</title>
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          <![CDATA[Seals, sea lions, and walruses do this pose all the time. But nobody wants to imitate a blubbery sea mammal, so Upward Facing Dog it is.]]>
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