9 Sensors for scientific use to be worn by a human to gather human biometric data that also include wrist, leg, torso, waist, neck, head, and ankle bands to hold the sensor in place, sold as a unit; software for monitoring and controlling communication between computers and automated machine systems; biometric feedback software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; communications software for connecting biometric feedback devices that measure and track body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; biometric feedback computer software and firmware for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; biometric feedback computer software and hardware for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; biometric feedback computer software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue, and instructional user guides sold as a unit; biometric feedback computer software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue that may be downloaded from a global computer network; biometric feedback computer software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; biometric feedback computer application software for mobile phones, namely, software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; computer application software for fitness tracking, medical data tracking, and biometric feedback, namely, software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; biometric feedback database management software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; downloadable biometric feedback software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; downloadable biometric feedback software in the nature of a mobile application for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; downloadable cloud-based biometric feedback software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; downloadable cloud-computing biometric feedback software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; downloadable biometric feedback computer software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; biometric feedback electric and electronic sensors for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; electronic software updates, namely, downloadable computer software and associated data files for updating computer software in the fields of fitness tracking, medical data tracking, and biometric feedback, provided via computer and communication networks; global positioning system (GPS) consisting of computers, computer software, transmitters, receivers, and network interface devices; biometric feedback medical software for measuring and tracking body hydration, skin hydration, heart rate, body temperature, human sleep cycles, oxygen levels, respiratory rate, time a person sleeps, and chemical constituents of blood and tissue; optical sensors; photoelectric sensors; temperature sensors