Answers: Could be a magnesium deficiency and you can find further information contained by a search for twitching + magnesium.
usually it is simply your muscles doing adsactly that...having a spasm, but it can also be due to dehydration. In the eye nouns it can be lack of sleep and tired eyes. Try drinking lots of wet, back rotten from the caffeen and rest your eyes a bit more, are you in front of a computer peak alot? that is usually a side effect because your eyes carry tired from staring at un natural table lamp and movement for too long. take a break, return with some water and shut your eyes for a bit. hope this help x c x