According to theWall Street Journal, excess weight can not only play havoc with a child's health, it can also have a financial impact on a child's life. Here's how it can affect you and your child financially:

Food
More food costs more money.

Medical
Obesity can cause anything from diabetes to heart disease to certain cancers. These illnesses will cost the overweight person 36% more in medical bills than their normal weight counterparts.

Life insurance
Insurance costs more if you're overweight.

Future earnings
A study by the Ohio University Center for Human Resources Research found that there was a direct correlation between Body Mass Index (BMI) and earning potential.

Being and staying fit not only makes you feel better, it can actually improve your net worth. As a parent, you owe it to yourself and your kids to be a role model for good health and fitness.