(Natural News) Homework is a burden for children — physically that is, according to researchers. In a study made by the SRM Institute of Science and Technology (formerly SRM University) in India, they discovered that backpack weight impacts the angle of the neck of school children. The research team believes that backpack weight might be linked to certain musculoskeletal disorders because of its effect on posture. This is true for children within school age, but it can also affect people who indirectly carry the schoolbags — like porters.