Nix is taking the guessing out of hydration. Nix's single-use sensor provides real-time, personal hydration status for the 60+ million athletes who are currently guessing at their fluid needs during training and competition. Studies show that athletes guess incorrectly up to 80% of the time, compromising their safety and performance up to 29% as a result of involuntary dehydration. This is 100% preventable with the proper tool.