Hashish, commonly known as hash, is a psychoactive drug made from the resin of the cannabis plant. The resin is rich in THC, the main mind-altering ingredient found in the cannabis plant. It is dried and pressed into small blocks and smoked, or added to food and eaten. Hashish is a reddish-brown to black colored resinous material of the cannabis plant. Pieces are broken off, placed in pipes and smoked. People who use hashish may experience a pleasant euphoria and sense of relaxation. Other common effects may include heightened sensory perception, laughter, altered perception of time, and increased appetite. Short-term effects of hashish include disrupted learning and memory, difficulty with thinking and problem solving, distorted perception, loss of motor coordination, increased heart rate, and anxiety. Hashish can lead to addiction and poor performance in school.