Linked from
The 19 pages that link to Interval training, each with the reason it gives.
Aerobic exerciseRelated: It develops aerobic fitness through repeated changes in intensity.
Cross-country runningRelated: Runners use intervals to develop speed and the ability to change pace.
800 metresRelated: It develops the speed and recovery needed for repeated high-intensity running.
Long-distance runningRelated: Distance runners use it to develop speed and aerobic capacity.