Exercise

Why is Aerobic Exercise so Good For You?
Greater Elasticity of veins
Greater return volume to the heart
Artries have muscular walls take blood away
Veins have "Venus pump" check valves to send blood back to heart from foot
exercise helps this process, by keeping the elasticity
Increase Capillary density
more capillaries are like more roads to a city (more roads=more supplies) makes the body more efficient
In crease mitochondrial density
Increase Endorphans--"runners high"
Aerobic Excerxise delays or even prevents the onset of dementia

The Big Three
Diet Rest Exercise

FITT Principle
Frequency
Three days per week
Intensity
65%-85% of predicted maximum heart rate
Time minimum of 30 minutes per exercise session
Type run walk x-country bike swim

Youth Activity
Most active
High volume
Short bouts
Moderate to high intensity
Not for a long time but for high intensity in a short period, they go hard and recover quickly