is your 400m swim outdoors? part of a sprint tri? if it is i would work on your concern about training outdoors, watch videos, read books, talk to others or on forumns to get over any anxiety about it...you are not alone. I wish i lived in TX so i would be able to get into a lake down there.......have you checked out all your local ymcas, gyms? some will give you a daily pass or month to month membership...good luck