A resistance band is an elastic band used for strength training. They are also commonly used in physical therapy, specifically by convalescents of muscular injuries, including cardiac rehab patients to allow slow rebuilding of strength.
The bands are color coded to show different levels of resistance and users need to select an appropriate level. Code colors vary between brands.
Resistance bands are simple to use and their light weight allows people to easily carry them if travelling and continue with routine sessions for strength training.
Although there are many different forms of exercises for the bands, the resistance of the band as well as number of repetitions are the main variables used to lower or increase the intensity of the workout