The study investigated effects of exercise habit on body composition and body somatotype of staff of College of Education (Technical), Kabba. Four objectives with their corresponding research questions were posed and null hypotheses were postulated and tested at 0.05 level of significance. The design was cross-sectional survey design, the population for the study consisted of about five hundred and five, a sample size of one hundred and fifty were sampled using simple random sampling techniques of balloting with replacement. Structured questionnaire were used for data collection on exercise habit and anthropometric instruments were used for body measurements. The findings revealed that: both males and females staffs were overweight (mean= 26.7366, SD= 4.57287) (mean= 27.6853, SD= 4.81326), both males and females staff were with normal waist to hip ratio (WHR) (mean= .8546, SD= .05248), males were with normal body fat percent (mean= 14.1090, SD= 4.25180), but females were with abnormal body fat percent (mean= 23.8606, SD= 7.42006). All males were ectomorph (mean= 11.4300, SD=1.17362) while females were ectomorph and mesomorph (mean= 11.7185, SD= .7009), (mean= 14.0105, SD=2.1238). Male exercisers were with normal waist to hip ratio, WHR, while males’ non-exercisers were with abnormal WHR and body fat percent. Female exercisers were with normal waist to hip ratio WHR while non-exercisers were with abnormal, WHR and body fat percent. The findings from the hypothesis revealed that only female BMI and Fat% with (f= 3.613, p=.033<0.05), and (f=27. 862, p=.000< 0.05) were significant determinants of exercise habit.