@Ephraim_Snr Its grease from Lotion/Vaseline you applied after your earlier bath.
It looks like that because of dust as well as flakes of your own deadskin.
These rolls usually appear when you bath with cold/ lukewarm water which cant melt the grease, coupled with using weak soap
@AfiaDimple_ it depends on the context.
For example, internet bandwidth.
when limited, Streaming an audio podcast involves less buffering delays than watching a video . therefore sound travels faster than light ππΎββοΈπ