Retirement planning: Invest in your health

(MoneyWatch) When planning for retirement, most people automatically think of the financial issues involved, such as investing, Social Security and insurance. But you may be overlooking another important investment: your health. Boosting your well being can improve your enjoyment of life now and in the future, while potentially extending your lifespan and saving you boatloads of money on medical bills.

Welcome to week four of my 16-week series on planning your retirement. I'm covering the steps you can take to improve your health early in my 16-week course because it takes a while to establish healthy habits. If you take one small step each week throughout the rest of this series, yo