What does interval training consist of?

Interval training is characterized by alternating periods of high-intensity exercise with periods of lower intensity or rest. This method allows for improved cardiovascular fitness, increased metabolism, and enhanced performance over time. The high-intensity bouts push the body to work harder, while the recovery periods provide necessary rest to enable sustained effort during the intense intervals. This approach is particularly effective for improving both aerobic and anaerobic fitness.

Continuous moderate exercise focuses on maintaining a steady pace without the alternating intensity levels that define interval training, while stretching and flexibility routines are primarily aimed at improving range of motion rather than cardiovascular or muscular endurance. Long endurance sessions involve sustained activity at a consistently lower intensity, which differs from the varying intensity levels that interval training promotes. Hence, the option that accurately describes interval training involves the combination of harder bouts of exercise interspersed with recovery periods.