I am gettng muscle twitches/spasms in the knees, ankles, thighs at tnight as I m about to drop off to sleep. It keeps me awake. A friend said she had a friend who had something similar, was told it was caused by a deficiency of calcium, magnesium & potassium, that he started a supplement, problem solved. I would rather solve this by natural means, rather than meds/supplements, Will some dietary changes help to relieve this? I am 73 y/o, am doing well after a 9 mo. old hip fx, exercise w water aerobics 3 x wk. Any suggestions? Ann P. White