| Exercise: 7 benefits of regular physical activityThe merits of exercise in promoting motivation. Mayo Clinic |
| Aerobic Exercise: What 30 minutes a day can doThe benefits of aerobic exercise. Mayo Clinic |
| Exercise: When to Check with Your Doctor FirstKnow how to determine when you should see a doctor before beginning an exercise program. Mayo Clinic |
| Fitness programs: 5 steps to getting startedHow to set up a fitness program for a healthier life style. Mayo Clinic |
| Overcoming Barriers to Physical ActivityThe 10 most common reasons for physical inactivity and how to overcome them. Centers for Disease Control and Prevention |
| Heart RateWikipedia encyclopedia entry |
| Target Heart Rate and Estimated Maximum Heart RateUnderstanding and measuring the intensity of aerobic activity. Centers for Disease Control and Prevention |
| Intro to Heart Rate MonitorsA beginners guide: What is a heart rate monitor? Can it help improve performance? Rice University Sports Medicine |
| Heart Rate Training ZoneWhat is it and how to determine your heart rate training zone. medicinenet.com |
| Perceived Exertion ScaleWhat is it and where should I be on the scale? University of Michigan |
| How much exercise do you need?Benefits, safety and how to become active. Centers for Disease Control and Prevention |
| StretchingWhy and the proper technique. University of Michigan |
| Exercise and Physical Activity: Getting Fit for LifeBenefits and avoiding injury. National Institute on Aging |
| Benefits of Physical Activity, Risks, Tips for Avoiding Activity-Induced InjuryBenefits and avoiding injury. Centers for Disease Control and Prevention |
| Physical Activity GuidelinesPhysical activity and public health guidelines for adults under 65 and those 65 and over. American College of Sports Medicine |
| President's Council on Physical Fitness and Sports: Physical Activity FactsFacts to pay attention to! Department of Health and Human Resources |
| Fitness InformationCollection of articles on exercise and fitness. medicinenet.com |
| Hot-Weather Exercise: How to keep coolConquer the challenge of outdoor exercise when temperatures soar. Mayo Clinic |
