I am a Female, Indian , of 40 Years. For the past One and a half years, I have been suffering from lower back ache. I am 5'4" tall 172lbs. Since the past few months, my knees also hurt after driving. According to the Doctors, I have weak back muscles, so some excercises have been told. Since childhood, my left leg aches. Its been quite a while since i'm I'm unable to sleep because of pain in both legs. Please suggest something...