Abstract: The purpose of this study was to investigate the effects of regular exercise programme on the health related physical fitness of obese and non-obese undergraduate students. To achieve this, purposive sampling technique was used to select a total of sixty four (64) subjects who were further divided into experimental and control groups through the simple random sampling technique from Ahmadu Bello University, Zaria, Nigeria. The experimental groups of obese and non-obese went through interval training programme for twelve (12) weeks. Both the experimental and control groups of obese and non-obese went through pretest and post-test in the 12 minutes cooper distance run test.