... question is my new years resolution was to tone up, while going thru menopause. So using my tread mill , at a fast walk for 20 minutes for 3 days... The pain in my legs isn't a sore pain from exercise, more like a burning deep in my muscles. This has happened before. My question is why just a little bit of exercise takes me days to recover, when I should just be sore and keep exercising could this related to my MH? I am a small framed female, no body fat so I know it can't be weight on my legs that make me feel this way. And I have no other health problems except blood pressure which is under control. Thank you.