Have you ever got up in the middle of the night because of a massive cramp? If you have not, you probably have no idea how it feels likes to get up with cramps in your legs or arms. The pain is severe and the seeing your leg muscles contracting like in the video is not a pleasant experience. This will remind of you of special effects in sci-fi movies.
The video given above shows the calf cramp of a guy. He was playing Frisbee outside and when he got back home, he experienced something weird in his leg. I think the guy should eat a banana to supply his leg muscles with some potassium. What do you think folks?