question: Dear doctor,Am Monica , i experience blood in motion from past months , not continuously. Am in dubai , due to extreme hot climate i had blood in motion twice.And when i am in office inside full A/C i drink lot of Cold water and when i  go to motion i feel the pain. Is it anything serious ?? or due to heat the blood came ?? pls advice.Now the climate is getting changed from Summer to extreme winter and even now i experienced that problem. pls advise me and what foods must i avoid ?? and what is the reason for the blood. Thanks Monica