When I do protective styles like crochet braids or u-part wigs, I can't get them to last because my cornrows get so tangled and matted. My hair is relaxed, fine and a little past APL. If my hair gets even the least bit wet, the cornrows start to loosen and then comes the tangles and mats. I workout a lot and sweat in my head so it happens. I try to wash a least once a week. Even within that week, my hair (the base of the cornrows - the part close to my scalp) gets horribly tangled and it takes hours to detangle. Any advice on what I might be doing wrong and what I can do to fix it? I know the easy solution would probably be to stop wearing protective styles but if i wear my hair out, it's a mess after I workout. And I'm tired of looking like crap.