1 Massage the twitch muscle with your finger for 15 seconds. 2  Usually there are other muscles that twitch like leg cramps, so take 500mg of magnesium citrate capsule daily. 3  If you have headaches, massage the knot at the back of your neck for release.
Â­So to measure really long distances, people use a unit called a light year. Light travels at 186,000 miles per second (300,000 kilometers per second). Therefore, a light second is 186,000 miles (300,000 kilometers).
In fact, the year specified in a light year is actually 11 minutes and 31 seconds longer than an Earth year. So, the year in a light year is actually equal to 1.000022 Earth years - a difference of a whooping 0.0022%!