Randomly twitching all over for months, no weakness, aching pain comes and goes. tests only show high ggt and moderately low phosphate. any ideas?

Need to examine: It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. If you drink alcohol, stop entirely. Take multivitamins in case it is a nutritional deficiency. Have a healthy diet, exercise 30 minutes/day, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/.