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.
What Causes Leg Cramps? Leg cramps at night are called recumbency cramps, and are caused by spasmlike muscle contractions. You might also experience leg cramps after exercising if you are dehydrated. In both cases leg cramps can be caused by electrolyte or mineral imbalance in the body. If your leg cramps are brought on by exercise, you may be dehydrated.