Thursday, March 22, 2018

"One Northwestern University professor . . . has worked with Gatorade to create a Band-Aid-like flexible patch that he said can will let you know you’re dehydrated by simply looking at it"

Twice:

As the wearer begins to sweat, perspiration flows through microfluidic channels within the patch’s reservoirs, passing through food-coloring dye and indicating the levels of chloride within the sweat.

Users can then examine the patch to monitor both the level of dehydration and the concentration of chloride within the sweat. (Chloride levels are good indicators of total electrolyte loss, Rogers said.)

Athletes can even snap a picture with their smartphone to receive more detailed analysis.