| 1. | health. |
| 2. | capability of the body of distributing inhaled oxygen to muscle tissue during increased physical effort. |
| 3. | Also called Darwinian fitness. Biology.
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fitness fit·ness (fĭt'nĭs)
n.
The state or condition of being physically sound and healthy, especially as the result of exercise and proper nutrition.
A state of general mental and physical well-being.
The state of being suitably adapted to an environment.