I agree with last comment. You probably need to learn to pace yourself. We tend to run faster at the beginning because we can but it does mean you won't be able to last as long. Try slowing down and seeing what happens, Either way, you are still making progress even if you do have to stop for a minute!
Never give up, never quit, never surrender
You only fail when you stop trying
There is nothing to hold you back except you.
You can press forward long after you canít. Itís a matter of wanting it bad enough.
The bad news is: we are our own worst enemies. The good news is: we are our own greatest champions.
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