ScienceWhat causes muscle cramps?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience07/22/2022July 22, 2022When it's hot outside and the sweat is flowing, some people have problems with muscle cramps. But salt and water loss are not the only reasons for the painful phenomenon.https://p.dw.com/p/4EAQjAdvertisement