The way men and women lift heavy weight is different. And women are more prone to back injuries.

A group of scientists observed a group of people lifting heavy boxes. They found that women tend to move each joint separately, one after another, which puts most of the stress on the lower spine. But men tend to move their joints in unison.

Experts say when a person uses a synchronizing pattern when lifting an object such as a heavy box, it's more protective of the back.

Homemade lunches aren't always healthiest

Experts say that many children's lunches packed at home don't as much fruit, vegetables and dairy as cafeteria lunches.

In fact, many of the home lunches are loaded with salt, sugar and sweetened drinks. And they often lack an an entree like a sandwich or even leftovers.

Experts say when kids don't get enough nutrients, they can run short on energy for the rest of the day.

Any amount of running can help

Running even a few minutes a week cuts your risk of early death, according to a new study published in the Journal of the American College of Cardiology.

Contrary to the 150 minutes of moderate exercise or the 75 minutes of vigorous exercise per week recommended by government health experts, the study found that people who run less than hour a week have the same health benefits as people who run more. That's regardless of gender, age, body mass index, health conditions or smoking status.

Those who ran at least some distances had a 30 percent lower risk of death from all causes and a 45-percent lower risk of death from heart disease or stroke. On average, runners lived three years longer than non-runners.

Running consistently can even balance out other mortality risk factors, including obesity, high blood pressure and smoking, one of the study's authors wrote.