The Blue Poop Challenge tracks your gut transit time and can reveal some interesting secrets about your digestive system. The time it takes for food to travel through your digestive system can ...

Blue. Poop. Challenge. This didn’t start off as ... Check your poo for a blue or green-blue tinge and write down what time you see it. Work out how many hours it has been since you ate the ...

Is your car frequently covered in bird poop? Part of it could be ... up 18% of cars marked by birds, while blue followed along in second place at 14%. Green vehicles got off the easiest, making ...