Physique refers to the form, size, and development of a person's body. It encompasses various aspects such as muscle tone, body fat percentage, and overall body shape. Different individuals may have distinct physiques based on genetics, lifestyle, and fitness routines. People often categorize physiques into types, such as ectomorph, mesomorph, and endomorph. These classifications help in understanding how bodies respond to exercise and diet. For instance, mesomorphs typically have a muscular build and can gain muscle easily, while ectomorphs may find it challenging to gain weight.