ok, i was doing a short indoor bike session (30 minutes), while wearing a bin bag, I was averaging about 18 km/h or m/ph (im not sure how this bike does things). So I was going on like that, topping at 26 mph or kmh and minimal being 14. Near the end, around 25 minutes gone I notice this strange white foamy looking substance on the padded bars, it was very slippy, my hjands kept shooting off the bars. Anyway, once i'd finished I got my finger and pushed it over the white foam substance and looked at my finger, it was a green almost liquid, looked kind of like pesto, anyone have any idea what it is? Help is greatly appreciated:-?