-- Posted by jillian0102 at 8:37 pm on June 17, 2008 and i know its not asthma, but i get this heavy and burning feeling in my lungs when i run on my treadmill. any idea of what it could be? because its really messing up my working out - and im not overweight or anything 5'1 and 105 pounds..so its not that kind of issue hmmm -- Posted by SovSull at 8:38 pm on June 17, 2008 how often do you run? -- Posted by californication at 8:38 pm on June 17, 2008 Maybe cut down on running for a while -- Posted by carnage44 at 8:39 pm on June 17, 2008 Is this a new phenomenon for you? -- Posted by greatescape at 8:39 pm on June 17, 2008 Anemia...possibly?  I'm in really good shape but I used to get really bad chest pains as soon as my heart rate got over 130.  As it turned out I was severely anemic. -- Posted by zoegirl1 at 8:39 pm on June 17, 2008 check with your doctor -- Posted by Another Chance at 8:40 pm on June 17, 2008 Any sort of allergies? Maybe run at a slower pace for a while until you can figure out what is wrong with your breathing. -- Posted by josphat10101 at 8:41 pm on June 17, 2008 take a break. how often do you run, and for how long? maybe work up to it if its something new? -- Posted by medjai at 8:45 pm on June 17, 2008 always take chest pains seriously. see a physician. it may just be gas but itmay be serious -- Posted by jillian0102 at 8:45 pm on June 17, 2008 i try to run every other day..and i get up to a mile but i have to stop sometimes and take a break because it hurts too badly sometimes, but maybe its because i just started running again last week - could that be it? i have no allergies..and my speed is only about a 9 minute mile, so not too fast -- Posted by Define Your Line at 8:47 pm on June 17, 2008 Do you smoke or do drugs?  Those can have an effect.  Also, just because you're skinny it doesn't mean you're in shape.  You can be as skinny as a toothpick but be totally out of shape.  That is probably the reason. -- Posted by Another Chance at 8:48 pm on June 17, 2008 Quote: from jillian0102 at 8:45 pm on June 17, 2008 i try to run every other day..and i get up to a mile but i have to stop sometimes and take a break because it hurts too badly sometimes, but maybe its because i just started running again last week - could that be it? i have no allergies..and my speed is only about a 9 minute mile, so not too fast That was happening to me when the weather was changing to spring. It was my allergies though, making my chest tight and painful. Even if I don't think I'm running that fast, I still slow down further until I can get control of my breathing. -- Posted by jillian0102 at 8:50 pm on June 17, 2008 ill slow it down a bit tomorrow and see how it goes. thanks everyone :)