Health Education Resources
Exercise Leads to Younger, Healthier Brains
The Benefits of Middle Age Fitness
A Walk in the Park is Good for Your Brain
Exercise as Housecleaning for the Body
73 Year Old Scales Mt. Everest
Mediterranean Diet for Longevity and Good Health
Mayo Clinic: Healthy Living
LiveScience Health
HealthNation
Livestrong Healthy Living
Kaiser Permanente: Health 
and Wellness
Brain Training Enhances Brain Health
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Exercise Benefits for The Brain
Exercise as Potent Medicine

Among survey respondents who were 'less than pleased' with their current fitness status, 80% indicated that they would likely be more active if they had specific information about the health benefits of regular exercise. 
Research summaries and magazine articles highlight the payoff from active lifestyle habits.
Articles
Informative Sites
Inform, Educate or Influence?