intense stretching discoloration?

I’ve been stretching intensely to the point of “burn”,in bathroom,with PE routine,and just about every chance I get. My emphasis is downward since my LOT is 8. I hold the skin at base and strecth and feel the burn and also strecth ligs and kegal while streching. There is a light brown spot midshaft,I am not alarmed,I am cool with the red spots,just wondering if this a Good sign?