I eat low sodium, cycle 70 miles a week, run 30, and sweat buckets. I'm fine.
When I go traveling, I end up eating out a lot due to circumstances. The sodium intake bloats up the skin, yowzers! My wedding band gets stuck on my finger, when normally it slides off easily, and I lose a bit of definition. I hate how that looks and feels.
Body builders will maintain high sodium levels until just before a competition, whereupon they stop consuming sodium and their water retention decreases granting them extra temporary muscle definition.