In another embodiment, an additional sensor can measure {TAIL ~ another piece} of information regarding the person using the hydration sensor, such as the persons body temperature or {HEAD ~ activity level} 
In another embodiment , an additional sensor can measure { TAIL ~ another piece } of information regarding the person using the hydration sensor , such as the persons body temperature or { HEAD ~ activity level }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD