### activity | effort:

Physical exercise
* appears to be a distinct aid in the treatment of dysmenorrhea.
* benefits the healing system in many different ways.
* can also help to increase circulation and strengthen muscles
  - counter depressed moods
  - help reduce the risk of getting osteoporosis
  - play a role in prevention
  - prevent many medical disorders as well as psychiatric disorders
  - reduce joint pain and stiffness and increase muscle strength and flexibility
* causes rapid cooling and dehydration of the airways.
* changes the body chemistry.
* great way to let off the pressure that causes hyperactivity.
* has many benefits and there is some data about endorphin release.
* helps increase mental abilities
  - loosen mucus in the lungs so it can be coughed up more easily
  - one sleep better at night
  - people improve their health both physically and mentally
  - reduce stress, even if it's only going for a daily walk
* improves body image and feelings of well-being
  - muscle tone, helps circulation, strengthens the heart
* increases the amount of xylene absorbed by the lungs
  - brain's blood supply
  - number of calories that are burned
* induces transient increases in circulating GAG levels.
* is also important in helping maintain bone mass when a woman becomes menopausal
  - important, to keep oxygen flowing to the brain
* is an essential for life
  - important complement to dieting in securing weight loss
  - especially important for people in wheelchairs
  - essential to good back health
* is one of the best methods to reduce stress
  - most important tools in managing stress
  - needs of American men, especially of American women
  - way to promote brain fitness
  - profoundly important in the treatment of depression as well
  - the key to breaking down the age barrier and maintaining health and fitness
  - well documented to reduce the risk of heart disease
* promotes a sense of well-being.
* releases tension in the muscles and greatly reduces anxiety.
* stimulates the body and makes it more alert.
* tool to reach that inner state of grace.
* works off tension, and maintains good health in general.
+ IAHD: Sports for the disabled :: Diving :: Non-profit organizations
  * The IAHD is a non profit foundation and all the people on the board are volunteers. There are also volunteers in regions around the world. Physical exercise helps people improve their health both physically and mentally. A person with a disability gets these benefits as well as increased social activity by taking up an activity like scuba diving. The risks in training a disabled person in diving are no higher than for able bodied people.

Reproductive effort
* are the main goal of vegetable gardening.
* decreases antibody responsiveness.
* resulting in sterile hybrids represents a wastage of biological resources.

Research effort
* provides advantage.
* yields results.

Struggle
* are attempts
* is effort

### activity | effort | struggle:

Class struggle
* Every class struggle political struggle for power.
* are conflict.
* is central because it is the struggle of the majority- the working and poor people
  - feared by the ruling class
  - the norm in capitalist society, it is inherent in the system
* takes place in real time and contexts.