Gonna need you to flesh this one out for me. Why would a heavy backpack be healthier? They tend to promote bad posture and back/neck/shoulder problems. The extr

Gonna need you to flesh this one out for me. Why would a heavy backpack be healthier? They tend to promote bad posture and back/neck/shoulder problems. The extra weight resistance during walking probably isn't going to outweigh the potential negatives. https://www.nbcnews.com/better/health/why-bags-are-wrecking-our-backs-ncna803541 https://www.nbcnews.com/better/health/why-bags-are-wrecking-...