<p>If I run three miles steadily, I won't be tired or feel any burn, and yet, I won't be able to go on. Breathing hard. No burn, but I just have to stop.</p>
<p>What's stopping me from being able to continue running? My lung capacity?</p>
<p>This thread needs LesOs.</p>
<p>How many weeks/months have you been running 3 miles per day? How many days a week do you run? What is your pace per mile? I'd try running 3 miles a day for say a month, take 2 days off running per week. Run at a comfortable pace, one where you could carry on a conversation while running. After this you could try running 4 miles on some of your training days. Still take at least 1 day off completely per week. Build up gradually. A good rule is to increase running miles by no more than 10% per week.</p>
<p>Its probably from your body not being used to running that long. Start off with smaller distance and build up to longer ones. Can you be more specific as to why you aren't able to go on?</p>
<p>A couple of cross country friends say that they have to stop because they feel the burn in their legs.</p>
<p>I just run out of breath.</p>
<p>Asthma ?</p>
<p>I think it's probably just a matter of lessening your running speed. Run at a comfortable (conversational) pace. Please try this and let us know how it goes.</p>
<p>You're probably not in good enough shape yet. Keep it up, though. Eventually it will become easier.</p>
<p>I have difficulty running. Within 30 seconds of starting, I'm out of breath and start dragging my legs along towards the first bench. and no, I'm not a couch potatoe, I'm slightly above my ideal weight, but my height covers up what is supposed to be a belly, lol. I think I don't have any energy....which is why I have no idea what the OP is talking about :)</p>
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This thread needs LesOs.
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<p>Ha, ha.</p>
<p>Your aerobic capacity is probably low (aerobic capacity = how much oxygen you consume during exercise, and how efficiently your muscles use it). You need to start off slowly, and gradually build up your aerobic capacity. Your muscles might be strong, but your body isn't used to using that much oxygen during exercise.</p>
<p>Also, if you're running 3 miles-ish, your legs wouldn't really burn- lactic acid usually just builds up during anaerobic exercise, like sprinting. Your muscles would just get overworked, and you wouldn't be able to run anymore. What you're feeling probably does have to do with muscle weakness, too (although your aerobic capacity is probably low as well).</p>
<p>Unless you're running in a meet, you shouldn't be that tired at the end of every run, because it will just wear out your system and you may become injured. Push yourself, but go at a pace/run at a distance that fits YOU. Start off running smaller distances, and then gradually increase your distance and pace.</p>
<p>The simple answer is: you're pushing yourself too hard, and your body isn't used to this much exercise. If you HAVE to run three miles, pace yourself better, although it would probably be better just to run less for now.</p>
<p>Dang... Track master haha.</p>
<p>Thanks. I've been running 3 miles a day to fill my personal quota since October began (not long, I know). I'll keep running and get myself in better shape.</p>
<p>NotAmbidextrous: Weight has little or nothing to do with fitness level. It sounds like your fitness level is extremely low, which would be why you're unable to run - your max VO2 uptake is probably very, very low.</p>
<p>I am 18 years old, and when I run for 30 seconds I get muscle cramps and burn in my legs and I'm out of breath. How do I improve? I'm not fat either. I'm actually 5'7 and weigh about 128 pounds. Am I going to die at a young age?</p>
<p>You just need to START RUNNING!
Start at a very slow pace, and run only one mile. Gradually increase your mileage. You shouldn't be feeling tired after thirty seconds... that means that you're going too fast.
Don't run- JOG! Or, if even jogging tires you out too much, just walk.</p>
<p>Memo to everyone: Just because you're not fat does not mean that you're fit, or that you'll be a particularly good runner.</p>
<p>Is there a way to remedy my situation? lol</p>
<p>Run. There are a number of good "start running" programs on the internet, try googling and you'll turn up a number. Generally, though, the idea is to jog (or jog/walk at the early stages) such that you are able to hold a conversation, and go for 40-60 minutes or so. Keep doing that and over time you will get faster and faster. There are also a number of other cardiovascular exercises that can be used to increase your cardiovascular fitness, but that's a long topic that's probably best covered by sites dedicated to that sort of stuff.</p>
<p>I am able to walk for 10 miles (I've tried this with a friend before); I just don't have the breath to jog for over 30 seconds.</p>
<p>That's because walking isn't particularly demanding, especially if you're not walking all that fast. How fast do you walk the ten miles, and how much vertical change is there during the walk?</p>