Hi Suresh - OMG - go and check out your legs - before it is too late - I have PAD and it is TERRIBLE ! I basically waited too long before seeing a doctor and when I did I was diagnosed with Peripheral artery disease and they scheduled me for an angioplasty and when I finally went into hospital to have it done the surgeon refused to do it because my arteries were too thin and there was therefore more risk doing the operation than leaving it. I have a lot of trouble walking, let alone walking far and horrid when there is even a tiny incline in the street cause it really hurts. Please go check it out at a Vascular surgeon! Hope you just have muscle pain and not the start of PAD