In the pre historic times, physical fitness was the key element for the survival of a human being. People during those times were confronted with the hostile environment and only fit individuals could survive. Hence, survival of the fittest was the dictum. Even the civilization of Sparta, Athens and Rome in the history of the world have stressed physical fitness or physical training as an important objective of the educational programme. Graves found relationship of speed with physical self, social self and total personality and strength with the physical self, while total score of physical attributes correlated with physical self, social self and total personality.

Sample of the Study: The subjects chosen for the study were male student, Football boys, Mahilpur. Consisted of 15 subjects. The ages of the subjects ranged from 18-22 years.

Hypothesis: It is hypothesized that there may not be significant difference between high and low temperatures on fitness component.

Variable: Motor performance of Boys of 18 to 22 years of age at different age levels will be taken by applying Motor fitness variable i.e. sit-ups.

Statistical Analysis: The data collected in test was statistically compared by using ‘t’ test. The level of significance chosen was 0.05.