Fat Deposits

       "type" : "mutation",
       "id" : "FAT",
       "name" : "Fat Deposits",
       "points" : 1,
       "visibility" : 1,
       "ugliness" : 1,
       "mixed_effect" : true,
       "description" : "You've put on some additional weight around your body.  It slows you down a little, but helps your swimming and warmth.",
       "prereqs" : ["STR_UP", "STR_UP_2", "STR_UP_3", "STR_UP_4"],
       "leads_to" : ["HIBERNATE"],
       "category" : ["MUTCAT_URSINE"]