Cramp...it's painful, and when striking at night can cause us to wake from sleep.
Magnesium can help with relief from cramp, especially if you are experiencing cramps at night. Magnesium* taken before bed will help.
If you experience cramp and need relief, use a feather light touch with your hand to fan over the cramping muscle as if you were brushing something off of the skin and this will release the 'pain' you are experiencing.
*Food supplements are not a replacement for a varied and balanced food intake. If you suffer from an illness you should discuss the use of a food supplement with a doctor.