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"You guys know I&amp;#39;m a big fan of running, but I&amp;#39;ve never ventured into the long-distance category. I tend to happily keep to 4-mile jogs--tops. But on Sunday morning, I ran my first 10K, and I finished strong. But, this really weird thing happened...\nPinterestFacebookMy dad and I ran a 10K in my hometown of Poulsbo, Washington, over the weekend. I was a little nervous about the wind and rain in the forecast and also about finishing, since 6.33 miles is more running than I typically do, and with my book&amp;#39;s recent debut, I&amp;#39;ve had very little time to train properly. But, I did fine, and I actually felt really energetic out there (which surprised me!).\nBut in the final lap of the race (we had to circle a high school track before we ran through the finish line), I suddenly got extremely light-headed and tingly all over, especially (and weirdly) in my arms. I was worried that I might collapse a few feet before I hit the finish line, but, thankfully, I didn&amp;#39;t.\nI tried to figure out what happened, and at first I thought it was just exhaustion, or maybe adrenaline taking over in that final lap, but I did some reading and realized that what I experienced was more likely the fact that my heart was working harder than it should have in those final yards of the race and my oxygen was depleted.\nAll was fine, and I feel great today, but I&amp;#39;ve learned that if I feel that way ever again, I shouldn&amp;#39;t continue sprinting (even if it&amp;#39;s in the final lap!); I should take it slow so that my heart can rebound.\nHas this every happened to you while exercising or running?\nMore reading:\n11 reasons to run a marathon\nRunning tip: A surprising way to beat a killer hill\nThis photo of Heidi Klum working out will totally inspire you!\nPhoto: Thinkstock"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.glamour.com/story/sarah-gets-personal-i-ran-my-f?mbid=synd_yshine>