I have been googling this for the past couple of days, and have come up with a fair idea how to go about things, but I'd be grateful of some assistance nonetheless. I have Character A and B, who have decided to try handcuffs on a whim, with no prior experience.
1. Would metal handcuffs cause loss of circulation on the wrists?
2. Would a double-lock ensure sudden tightening of the cuffs due to movement, or is it possible for even a double-locked handcuff to tighten suddenly?