How to spider curl<br>Locate the right equipment. Typically you're going to need access to a gym if you want to do spider curls. Some gyms may have spider curl benches, but if yours does not, you can use a preacher curl bench.
Spider curls can cause long-term spine issues. 
( z1 possible :ARG1 ( z2 cause :ARG0 ( z3 curl :mod ( z4 spider ) ) :ARG1 ( z5 issue :ARG0 ( z6 spine ) :ARG1-of ( z7 long ) ) ) )