1. Increased maximal oxygen consumption (VO2max)
2. Improvement in cardivascular/cardiorespiratory function (heart and lungs)
3. Increased maximal cardiac output (amount of blood pumped every minute)
4. Increased maximal stroke volume (amount of blood pumped with each beat)
5. Increased blood volume and ability to carry oxygen
6. Reduced workload on the heart (myocardial oxygen consumption) for any given submaximal exercise intensity
7. Increased blood supply to muscles and ability to use oxygen
8. Lower heart rate and blood pressure at any level of submaximal exercise
9. Increased threshold for lactic acid accumulation
10. Lower resting systolic and diastolic blood pressure in people with high blood pressure
11. Increased HDL Cholesterol (the good cholesterol)
12. Decreased blood triglycerides
13. Reduced body fat and improved weight control
14. Improved glucose tolerance and reduced insulin resistance
15. Increased muscular strength
16. Increased strength of tendons and ligaments
17. Potentially improves flexibility (range of motion of joints)
18. Reduced body fat and increased lean body mass (muscle mass)
19. Potentially decreases resting systolic and diastolic blood pressure
20. Positive changes in blood cholesterol
21. Improved glucose tolerance and insulin sensitivity
22. Improved strength, balance, and functional ability in older adults

How Physical Activity Impacts Health
Regular physical activity that is performed on most days of the week reduces the risk of developing or dying from some of the leading causes of illness and death in the world.

• Reduces the risk of dying prematurely.
• Reduces the risk of dying prematurely from heart disease.
• Reduces the risk of developing diabetes.
• Reduces the risk of developing high blood pressure.
• Helps reduce blood pressure in people who already have high blood  pressure.
• Reduces the risk of developing colon cancer.
• Reduces feelings of depression and anxiety.
• Helps control weight.
• Helps build and maintain healthy bones, muscles, and joints.
• Helps older adults become stronger and better able to move about without falling.
• Promotes psychological well-being.

Specific Health Benefits of Exercise

Heart Disease and Stroke. Daily physical activity can help prevent heart disease and stroke by strengthening your heart muscle, lowering your blood pressure, raising your high-density lipoprotein (HDL) levels (good cholesterol) and lowering low-density lipoprotein (LDL) levels (bad cholesterol), improving blood flow, and increasing your heart's working capacity.

High Blood Pressure. Regular physical activity can reduce blood pressure in those with high blood pressure levels. Physical activity also reduces body fatness, which is associated with high blood pressure.

Noninsulin-Dependent Diabetes. By reducing body fatness, physical activity can help to prevent and control this type of diabetes.

Obesity. Physical activity helps to reduce body fat by building or preserving muscle mass and improving the body's ability to use calories. When physical activity is combined with proper nutrition, it can help control weight and prevent obesity, a major risk factor for many diseases.

Back Pain. By increasing muscle strength and endurance and improving flexibility and posture, regular exercise helps to prevent back pain.

Osteoporosis. Regular weight-bearing exercise promotes bone formation and may prevent many forms of bone loss associated with aging.

Psychological Effects. Regular physical activity can improve your mood and the way you feel about yourself. Researchers also have found that exercise is likely to reduce depression and anxiety and help you to better manage stress.

Motivation
One of the main reasons people benefit from a personal trainer is that they loss motivation to stick with a consistent exercise program. Certified personal trainers can provide structure and accountability, and help you develop a lifestyle that encourages health.

Individualized program
If you have any chronic health conditions, injuries or training goals (running a marathon, for example) a trainer will work with you and your health care provider to plan a safe, efficient program that considers these needs and enable you to reach your health goals.

Efficiency
Personal Trainers help you focus on results and stop wasting your time doing inefficient workouts. A personal trainer has a plan and will help you get maximum results in minimum time.

Improve technical skills
If you play a particular sport, the right personal trainer will help you improve your skill by showing you new training techniques specific to your sport. The Trainer will incorporate skills training into your program so you improve not only your strength and endurance, but your agility and mental focus as well.

You are new to exercise
If you are an absolute beginner, a personal trainer is the ultimate fitness coach. A good trainer will introduce you to a very simple, effective routine and build efficiently so before you know it, you have the confidence and knowledge to decide what is right for you.

Break through plateaus
Ok, you are already in pretty decent shape, but you've been there for years. If you are stuck in the same routine and want to break out of a rut, a personal trainer is the perfect solution. A trainer will jump start, not only your motivation, but your routine as well.

Learn how to go it alone
If you ultimately want to learn all the facets of designing your own routines so you don't need to use a personal trainer, going for a few months may be all you need. All good personal trainers will teach you the basics of building and modifying a fitness program to achieve maximum results.

Workout Safely
A personal trainer watches your form, monitors your vitals and can provide objective feedback about your limits and strengths. Most of us tend to ignore some of the subtle signals our body provides. We either push through pain or give up too soon. Because a personal trainer can watch what you are doing while you are doing it, they can help push you or slow you down as necessary.

Workout at home
Many personal trainers make house calls. If you don't have the type or interest in going to a gym, but have a hard time knowing what to do on your own at home, a personal trainer can bring fitness into your living room.

Lose Weight
There is a good reason that the number one reason people hire personal trainers is to lose weight and get into shape -- it works. If you made a resolution to lose the fat and build the muscle, a trainer can keep you on track and help you realize that goal.