Whether it's because you work out a lot, it's hot outside, or you're just a naturally dewy person, excessive sweating can cause your body to crave salty snacks. This happens because, as Dr. Shah points out, sweat contains salt, and the act of sweating causes your sodium levels to go down. It's your body's way of telling you that you need to drink water ASAP.
In addition to craving salt, other symptoms like clammy skin, dizziness, headaches, muscle cramping, and others can signify that you're dehydrated (via Healthline). If you're feeling all of these things, down a class or two of water as quickly as you can and replenish your fluids.
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