<human>: Im sorry if this is a dumb question, I just never really knew what this was. For info-I am 5'8, 204lbs. While heavy, Im good with distance running, its my preferred exercise. I try to run atleast 3 miles 4 days a week and Im usually in the 28-30 minute range with it. But after doing this for a few weeks, I get what I can best describe as "impact soreness", as a part of my leg starts to ache with each impact. Its fine when resting, but once it shows up, it flairs up any time I jog. It gets bad enough for me to have to stop my routine and wait until its gone, which usually takes 2 or so weeks. I hate having to start and stop this way. Any clue as to what is bothering me so I can improve. I even have this problem when I try to run exclusively on surfaces like treadmills, dirt, or grass.

This album shows the location of the pain:

Give me the gist of the text in a nutshell
<bot>: Weird pain whenever trying to start up a good distance running habit. What is it? And what can I do to avoid/fix without stopping my routine.