The increasing prevalence of overweight and obesity among adolescents in Malaysia has become a serious concern. Based on researchers’ observation, students’ lifestyles are unhealthy. They tend to eat fast food and spending most of the time indoor rather than outdoor, which causes most of the students gaining weight. Hence, researchers decided to study on lifestyle of the students. To measure the individual’s health, one needs to determine what factors are related to Body Mass Index (BMI). A study was conducted among 360 students of UiTM Malacca Branch whose ages ranging from 20 to 23 with the aim to determine whether lifestyle factor does affect the students’ BMIs and to examine the most contributing factor to the students’ BMIs. The data were collected using questionnairesthat consist of questions concerning general characteristics of individual’s eating habits, physical activities, motivation, smoking, and medication. Logistic regression is used to achieve the objectives of the study. The dichotomous dependent variable was identified to find out whether the students have BMIs more than 25. After measuring the body weights and heights of the individuals, the results show 50.80% of the students’ BMIs who participated in the study were more than 25. Besides, the findings also show the BMIs of the individuals differed based on eating habits, physical activities, and motivation (p<0.05).