Answer: You can have 50 geo-fences for each GPS vehicle tracking device and 50 global geo-fences per account. Each geo-fence is square and centered around an address that you specify.
1 Almost everyone experiences a muscle cramp at some time in their life. 2  There are a variety of types and causes of muscle cramps. 3  Numerous medicines can cause muscle cramps. 4  Most muscle cramps can be stopped if the muscle can be stretched.
Other causes can include medications such as birth control, diuretics (which are often prescribed for people with high blood pressure) and steroids. A lack of potassium or calcium can also be the underlying cause, as well as cold weather.. Acute leg cramps frequently are confused with restless legs syndrome (RLS). But RLS is a different and more serious, chronic condition characterized by discomfort and persistent throbbing and pulling sensations in the legs. How to Prevent Leg Cramps. There are a number ways you can alleviate nighttime leg cramps.