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.
There's no surefire way to prevent leg cramps, but these tips might help: 1  Don't stand or sit with your legs crossed for long periods of time. 2  Stretch your calf muscles regularly during the day and several times before you go to bed. 3  Rotate your ankles and wiggle your toes whenever you sit down, eat dinner, or watch TV.