Recent research has determined that children should not carry more than 10-15 percent of their total weight in their backpack. A follow-up question was posed in the New York Times asking what will happen to the spinal development of those children who carry over the 15 percent limit. The experts replied: "It will affect posture and may lead to serious back pain …"

Possible Preaching Angle:

How big of a burden are you carrying around on your back? Is it more than the 15 percent maximum? As the old spiritual says, maybe it's time to lay those burdens down.