1. Chapter 3 lesson 2 Benefits to Physical fitness
Nervous system – Improve reaction time
Respiratory System – With regular exercise system begins to work more slowly & efficiently
Lung capacity increases – don’t lose breath as quickly when running
Circulatory system – Strengthens the heart
Blood pumps more efficiently
More work with less effort

2. Exercise and weight control
1 of 3 American adults
1 in 5 American teens
Are overweight or obese
Sedentary lifestyle – little movement or exercise

3. Your Metabolism Problem of being overweight is related to two Concepts
Metabolism –process by which your body gets energy from food
Basal Metabolism – minimum amount of energy required to maintain the life processes in a body

4. Your Metabolism
You get energy from your food, the energy value of food is measured in units of heat called Calories
When exercise your metabolic rate increases and you burn more calories

5. Your weight
If you take in fewer calories than you burn you lose weight
If you take in more calories than you burn you gain weight
3,500 calories =1 pound
Every extra 3,500 calories taken in equals and extra pound you carry

6. Benefits to M/E Health
Relax tension
Sleep better
Increase creativity
Outlet for tension, stress, anger
Contributes to positive self esteem

7. Benefits to Social health
Helps to relieve stress in relationships
More likely to get out and meet new people

8. Improving Cardiorespiratory Endurance
Aerobic Exercise – vigorous activity which oxygen is continuously taken in for a periods of a least 20 minutes
Recommend 30 minutes 5 days a week
Heart rate increases sending more oxygen to the muscles to be used as energy to do more work
Distance runners

9. Improving Cardiorespiratory Endurance
Anaerobic Exercise – Intense bursts of activity in which the muscles work so hard that they produce energy without using oxygen
100 meter dash

10. Other forms of Exercises
Isometric – activity that uses muscle tension to improve muscular strength
Muscles against muscles
Isotonic – Combines muscle contraction with repeated movement
Lifting Weights
Isokinetic – Involves resistance through an entire range of motion
Hydraulic levers