With school back in session, homework and life is beginning to weigh down on kids’ backs. The Federal Consumer Product Safety Commission has calculated that carrying a 12-pound backpack to and from school and lifting it 10 times a day for an entire school year puts a cumulative load on youngsters’ bodies of 21,600 pounds — the equivalent of six mid-sized cars. But it’s not just kids: College students and professionals weigh themselves down with heavy backpacks too. It’s extremely…
