Then, the user gets off the bike, removes sweat with a towel and measures {HEAD ~ his weight} with {TAIL ~ an accurate scale} 
with
Then , the user gets off the bike , removes sweat with a towel and measures { HEAD ~ his weight } with { TAIL ~ an accurate scale }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL