First morning urine

Yep. I tend to drink more water in the afternoon and everything and often drink a glass over night as i end up waking up super thirsty. I’ve gotten all my early positives in the afternoon. When I was tracking line progression using first morning urine I’d stress myself out because they would always be lighter than the afternoon before.

For some fmu isnt the best. It just depends on you. If yiu test darker in the evening then tests evenings. I had to use fmu.

I have heard of this before. Do whatever works for you :)