An express train that only halts at a limited number of stops.
With certain (often specified) limits placed upon it.
Restricted, small, few, not plentiful.
Requiring a high level of effort or performance.
The act by which something is stretched.
A form of physical exercise in which a specific skeletal muscle (or muscle group) is deliberately elongated to its fullest length in order to improve the muscle's felt elasticity and reaffirm comfortable muscle tone.