how lifestyle influence on students' performances in studies

For the past few days, I was very busy completing my OZZ (public health) research work. The research work is on “how lifestyle influence on students’ studies.” Here is the abstract of my writings upon the survey done. Really thank God for His power to complete this task. Praise the Lord.
This study examined the relationship between a healthy lifestyle and students’ performances in studies. A healthy lifestyle was measured by diet, exercise, sleep, alcohol use, and tobacco use. The participants included 300 undergraduate students from Kursk State Medical University, who represented a range of ages, gender and nationality. It was hypothesized that a healthy lifestyle would be positively related to students’ performances in studies. More specifically, that diet and exercise would have a positive relationship to students’ studies, and alcohol and tobacco use would have a negative relationship to students’ studies.
This survey is very important in order to find out factors in a students’ lifestyle that can make them healthy or unhealthy. Basic diet and nutrition aids a student in many different ways. Eating the correct amount of nutrients provided in the food groups is essential for the body’s proper functioning and may affects overall performance, which we would assume that the performance could also include cognitive performance of students. Exercise is another aspect that is important to a students’ health. Exercise activities have been known to boost energy levels, release tension, prevent illnesses, reduce the risk of heart disease, and help a student to manage stress. It is found that students who did not engage in physical activity also had an array of other unhealthy habits, such as poor diet, smoking, and low academic performance. On the contrary, students who engage in physical activity had higher grade point averages and have better relationships with their parents. Exercise not only promotes good physical health but it also aids a student’s psychological health. Excessive alcohol use and use of tobacco products are harmful to one’s body because it can cause illnesses and turn into an addiction. This is very unhealthy, because addictions severely hinder a student’s present and potential capabilities because the body becomes dependent on the substance. Excessive use of alcohol also can cause students to use bad judgment and can also lead to more serious health problems such as cirrhosis of the liver, inflammation of the pancreas, brain and heart damage, and malnutrition. Tobacco use can also cause a variety of serious health problems among students. Smoking may cause lung cancer, stroke, heart disease, infertility, and bronchitis. Finally, the studies also examined how a stressful lifestyle may influence on students’ studies. It is very important for the students to have a balance lifestyle in order for their bodies and minds to function properly.
Thus, if a healthy lifestyle is not achieved, the students will encounter problems not only physically but mentally as well. Ultimately, if student’s health is not up to par then that student will not perform to their potential in their studies.