In {TAIL ~ one embodiment}, one or more additional sensors are integrated or coupled to {HEAD ~ a hydration sensor} 
In { TAIL ~ one embodiment } , one or more additional sensors are integrated or coupled to { HEAD ~ a hydration sensor }
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD