Riddle

I run cold and hot, I look blue but I am red. What am I?

Choose an answer

A.Sweat
B.Water
C.Ice
D.Blood
Hint: It's a word with 5 letters, starting with "B".

Answer

Blood

Why this is the answer

Blood can make you feel hot with anger or run cold with fear, and it looks blue through your skin even though it is actually red.

This riddle is filed under "What Am I?" Riddles and rated Medium.