If you are on anxiety medications like SSRIs eventually they seem to cause fasciculations in a lot of people, myself included, which is why I am weaning off and I FEEL A MILLION TIMES BETTER! It's normal to get fasciculations for about 10 minutes after exercise. When you get them all day long, it's probably because you are a little dehydrated and need to stretch. Stretching definitely helps. Every day stretch. It is nothing pathological when it's in the calves. It is annoying and you probably will have it for years. The only thing you can do it stretch and avoid things that carry a lot of neurotoxins like eating shrimp, foods with aluminum, big fish like tuna that have a lot of mercury, eating a proper diet (like 6 small meals a day), make sure you get enough electrolytes. I get fasciculations and have had them over a year. I get them in my face, arms, and back. All day long. They are less and less, especially on days when i eat food with no preservatives or added chemicals. If I eat dirty food like shrimp, I twitch nonstop. I have been tested for a lot of things and I am not allergic to anything, negative lymes, normal MRI, so therefore I have benign fasciculation syndrome. It also seems to be common amongst healthy people that exercise and lift weights, which i did for a while. In mice, these receptors wears off for the muscles during periods of heavy excercise and when you exercise and then stop their are different chemicals circulating in your body and when the receptors are worn off they make the muscles twitch because the receptors are worn off. Totally normal.... so if you get twitching it is actually a sign that you are in good health and you probably exercise a lot and have more muscle than fat. It's annoying but it is what it is.