If you compare ; physical activity with intake of low calorie food for the weight Loss journey ; physical activity burns very less calories and consume more time in comparison to eating low calorie food . Now the question is , then why physical activity is important . Let’s discuss the importance of physical activity. Physical activity improves overall functioning of all the body organs , which gives you a better health and sleep . Its a hypothetical example to explain the importance of physical activity; there was an overweight person with high blood pressure , diabetes , hypothyroidism and polycystic ovarian disease . She started doing physical activity and after six months , she found her blood pressure , diabetes , hypothyroidism and polycystic ovarian disease got better . Just look , there was no significant weight Loss but her health problems got better . To conclude, eating low calorie food just lead to weight loss but doing physical activity, a person can get rid of chronic health problems without significant weight loss . In physical activity, weight loss may be less but there is an overall improvement of health with an added advantage of getting rid of chronic health problems.