POST COPY: Did you know cold water can disable muscles in minutes? Cold water (below 70°F) can cause rapid muscle fatigue and cold shock, even in strong swimmers. Loss of control often happens much sooner than hypothermia and increases drowning risk. https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/CG-5PC/CG-CVC/CVC3/notice/flyers/Cold_Water_Survival_Hypothermia.pdf