stiff neck; stiff shoulders
to coagulate; to curdle; to be fanatical; to be obsessed with; to stiffen; to become stiff
perfectionist; enthusiast; zealot
stiff neck; stiff shoulders
fastidiousness; enthusiasm for one thing; meticulousness; susceptibility for a stiffening of the shoulders
to be into something (e.g. a hobby)
coagulation; clot; enthusiast; fanatic