This morning, when I got up to urinate, I urinated a little and noticed a brown strand in the toilet (Note: It could have been there in the toilet prior) I poked at it with a knife, and it kind of broke up. I have no burning when urinating, no fever, etc. I did exercise extensively yesterday, without proper hydration; infact the only thing I did drink was iced tea (brown..). Later this morning I hydrated myself A LOT, with water, did not notice any more strands, etc. Just hydrated colored urine. Any advice on this would be helpful, thank you.