Conversation: The conversation between human and AI assistant.
[|Human|] Hello..I am a 46 yr old active female. I am a runner. I had extensive foot surgery in 12/2013 and just now starting to run more in the past 5 months. I have been experiencing a sharp pain in the left breast area. It occurs at anytime and more when I am upset. I also have noticed that I am not inhaling enough oxygen as when I run. I get winded more and am running only 2-5 miles at any time. Should I be concerned?
[|AI|]  Anytime one is going way up on ones exercise, it would be good to get a check-up. There are age related decreases in exercise. They are smaller than deconditioning which really lowers how much exercise one can do but can be built back up in under a season. Key point is muscle fatigue is from more acid building up in muscles than what can be taken away:1) heart problems are felt as an INTERNAL muscle fatigue. It should be dull, achy, occurring at set amounts of exercise, lasting minutes and fading in a particular pattern. It should not be sharp, triggered by poking the chest, triggered by just moving a certain way and on and off in a second.2) Muscle fatigue occurs at fewer amounts of work with age. Muscle fatigue can be vastly improved with exercise this includes heart pain, but it might kill you first (a problem and a reason for medical supervision).