Examlex
The efficient exchange of gases in gills is an example of countercurrent exchange.
Stretching Exercises
Physical activities that aim to increase the flexibility of muscles and improve the range of motion in joints.
Threshold
A critical point or level that, when exceeded, initiates a different state or action.
Fitness Benefits
Improvements in physical health, mental health, and overall well-being achieved through regular physical activity.
Altitude
The height of an object or point in relation to sea level or ground level, often affecting climate, weather, and physical exertion levels.
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