Intervention group: Participants assigned to the intervention group will receive educational intervention program to improve their knowledge and promote lifestyle adherence in terms of healthy diet behaviour and physical activity among the undergraduate students. This program will include educational booklets and educational classes include six weeks of in-person education sessions and six weeks of social media messaging. The course will include six weekly teaching units (lectures and group discussions, 45-60 minutes each):

Topic 1: To understand the causes and prevention strategies for overweight and obesity.

Topic 2: To understand food based approaches to reduce or prevent overweight and obesity.

Topic 3: To understand the importance of regular physical activity. Topic 4: To demonstrate how snacking can be a healthy habit. Topic 5: To learn how to read and interpret food labels. Topic 6: To understand how to prepare healthy meals.

Participants randomized to the control group in this study will not receive any intervention (They will have their regular curriculums and normal physical activity routine).

This intervention is based on the Social Cognitive Theory (SCT) and The Health Belief Model (HBM) to improve knowledge and promote lifestyle adherence in terms of healthy diet behaviour and physical activity among the undergraduate students. This program will include educational booklets and educational classes include six weeks of in-person education sessions and six weeks of social media messaging. The course will include six weekly teaching units (lectures and group discussions, 45-60 minutes each):

Topic 1: To understand the causes and prevention strategies for overweight and obesity.

Topic 2: To understand food based approaches to reduce or prevent overweight and obesity.

Topic 3: To understand the importance of regular physical activity. Topic 4: To demonstrate how snacking can be a healthy habit. Topic 5: To learn how to read and interpret food labels. Topic 6: To understand how to prepare healthy meals.

The knowledge, attitude, and practice of obesity will be measured using a self-report instrument knowledge, attitudes, and practices questionnaire (KAPQ) modified by Laar et al. (2020). The questionnaire will consist of close-ended questions divided into three sections: The knowledge section will cover participants' understanding of obesity, its causes, consequences, and prevention strategies. The attitudes section will capture participants' feelings and opinions towards overweight obesity. Some of the items under this section will include how participants feel about their body shape, weight, and diet. The last section will capture participants' practices related to obesity, including the frequency of consumption of fast foods, sweets, refined carbohydrate foods, vegetables, and fruits.

The Body mass index (BMI) will be report in kg/m^2 by using the following formula (BMI = kg/m2 where kg is a person's weight in kilograms and m2 is their height in metres squared). Body weight will be measured using Omron HBF 375 to the nearest 0.1 kg. SECA body meter 206 will be employed to measure their heights to the nearest 0.1 cm. Body mass index (BMI) will be classified into (underweight, normal weight, overweight, and obesity). If the BMI is less than 18.5, it falls within the underweight range. If the BMI is 18.5 to <25, it falls within the healthy weight range. If the BMI is 25.0 to <30, it falls within the overweight range. If the BMI is 30.0 or higher, it falls within the obesity range.

The Physical Activity will be measured using a self-report instrument international physical activity questionnaire (IPAQ). The IPAQ was determined to be reliable (Craig et al., 2003) and valid (Lee et al., 2011). It uses the types of intensity of physical activity and sitting time that people do as part of their daily lives to estimate the total physical activity per week and time spent sitting. The IPAQ has seven open-ended questions surrounding the individuals' last 7-day recall of vigorous, moderate and sedentary physical activities; frequency (in days per week) and duration (time per day). Participants in the both groups will respond to the IPAQ at three points of the study (beginning, post-intervention and 3-month follow-up).