Your in luck,this is the first time I've been to this
group. Here is a guaranteed solution:Go to any big drugstore
at the pain dept and ask for a TENS UNIT.It's about the size of
a cellphone with 2 leads coming from it with pads on the end.
It works by battery giving electronic pulses which stimulates
the body's own endorphines. Place the pads behind the knees
on C setting for about 20 to 30 mins.before you settle down to
sleep (easy to do in bed while you read).Next morning,you'll
wake up NOT having been disturbed by the dreaded jumping
of the legs! It's about $30-35 depending where bought.
I assure you its worth every nickel!