http://www.researchgate.net/profile/Redhwan_Al-Naggar/publication/51179258_Nutrition_and_cancer_prevention_knowledge_attitudes_and_practices_among_young_Malaysians/links/0c96053168d8f9f02e000000.pdf

http://www.hsph.harvard.edu/obesity-prevention-source/obesity-causes/physical-activity-and-obesity/

http://www.cam.ac.uk/research/news/lack-of-exercise-responsible-for-twice-as-many-deaths-as-obesity

https://med.stanford.edu/news/all-news/2014/07/lack-of-exercise--not-diet--linked-to-rise-in-obesity--stanford-.html

http://www.noo.org.uk/uploads/doc/vid_11171_Attitudes.pdf

http://www.cbsnews.com/news/whats-more-to-blame-for-obesity-lack-of-exercise-or-eating-too-much/