Inactivity
* -Causes joints to loose their flexibility because connective tissue shortens.
* aggravates negative thoughts and feelings.
* can also cause disconnections
  - fluid retention and swelling of extremities
  - contribute to constipation
  - lead to blood clots
* can be extremely harmful to all lead acid batteries
  - harmful to deep cycle batteries
* can cause a loss of bone structure
  - poor appetite, which in turn effects a person's strength
  - weight gain and loss of strength and stamina
  - lead patients to shut themselves off from the world
* can lead to blood clots, stroke, heart attack, and pneumonia
  - dysfunction in injured areas and a loss of strength
  - obesity and chronic disease
  - obesity, which is closely tied to diabetes
* causes a return to the normal state.
* causes muscle deterioration, which results in greater weakness and fatigue
  - disuse and results in musculoskeletal disorders
  - people to become progressively weaker, so that any movement causes more pain
* contributes to loss of muscle action.
* encourages both loss of muscle tone and bone deterioration.
* following surgery allows secretions to collect in the lungs.
* fruitful cause of disease.
* increases with age.
* is about the same risk factor as smoking in terms of health
  - acts
  - also higher among women
  - an act
  - another cause of constipation, and therefore piles, so get up and move about
* is as dangerous as smoking
  - harmful to health as high blood pressure, high cholesterol and smoking
  - bad for our heart and circulation
  - common among all age groups
  - completely unnatural to the body
  - directly relative to a persons health and life span
  - prevalent among people of all ages, race and incomes, some more so than others
* is the lack of input or output
  - main cause of that creeping weight with age
* key cause of childhood obesity
  - to being overweight
* leading cause of declining bone mass.
* leads to atrophy and death.
* major cause of muscle weakness and causes progressive loss of muscle mass.
* makes bones lose strength and become more fragile, increasing the risk of fracture.
* produces the same effect upon the whole muscular system.
* results in loss of muscle.
* results in stiffness and delays healing
  - of the joints
* risk factor for both heart attack and brain attack.
* serious risk factor to our health and to our economy.
* vicious cycle.

### inactivity:

Delay
* are inactivity
  - pauses
* is inactivity
* occur frequently in dynamic systems.

### inactivity | delay:

Developmental delay
* are a hard fact of having a premature child
  - illnesses
* is severe and often the presenting symptom.

Lag
* appear bright under ordinary transmitted light and highly birefringent under polarised light.
* are delays between servers communicating to each other
  - integer numbers of time units, at which the given coefficients are applied
  - more birefringent than either annuli or growth zones

Network delay
* function of the capacity of the network and the speed of the packet processing.
* is an estimate of how long it takes to get packets across the network
  - the time it takes for packets to go through a network

Propagation delay
* is based on the speed of light.
* is the time it takes the physical signal to traverse the path
  - loss between when the signal is transmitted and when it is received

Time delay
* are ubiquitous in the nervous system.
* occur in biological systems, and they can produce complicated dynamics.
* play an important role in many biological and ecological systems.