Exercise bands, also known as resistance bands, are flexible, stretchy bands used for strength training and rehabilitation. They come in various thicknesses and lengths, providing different levels of resistance to accommodate users of all fitness levels. These bands can be used for a wide range of exercises targeting various muscle groups, making them versatile and portable. They are often used in physical therapy, home workouts, and gym settings, allowing individuals to improve strength, flexibility, and overall fitness without the need for heavy weights.