Editing Wetsuit (section)

===Hoods===
In the [[human body temperature|thermal balance of the human body]], the heat loss from the head  and neck is roughly proportional to the exposed surface area, though there may be less vasoconstriction than the more peripheral areas, which could push up the amount. When the rest of the body is insulated, the percentage can be considerably higher, so wearing a well-fitting hood is useful, even at fairly moderate water temperatures.<ref name="Collins 2008" >{{cite journal|url=https://www.bmj.com/rapid-response/2011/11/02/heat-loss-head-cold-weather |title=Festive medical myths |journal=BMJ |first=Kenneth J |last=Collins |page=337 |doi=10.1136/bmj.a2769 |date=18 December 2008|volume=337 |pmid=19091758 }}</ref> Hoods have been reported to cause [[claustrophobia]]<ref name=Williams2003/> in a minority of users, sometimes due to poor fit. The hood should not fit too tightly round the neck. Flushing in the neck area can be reduced by using a hood attached to the top part of the suit, or by having sufficient overlap between the hood and the top part of the suit to constrain flow between the two parts. This can be achieved by tucking a circular flap at the base of the neck of the hood under the top of the suit before closing the zip, or by having a high neck on the suit.{{citation needed|date=February 2017}}
Wearing a hood can protect the ears, and reduce and delay the onset of [[surfer's ear]].