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