Stretching
You should definitely try it!
Stretching is a form of physical exercise in which a specific muscle
or tendon (or muscle group) is deliberately flexed or stretched in
order to improve the muscle's felt elasticity and achieve comfortable
muscle tone. The result is a feeling of increased muscle control,
flexibility, and range of motion.
Stretching is also used therapeutically to alleviate cramps and to
improve function in daily activities by increasing range of motion.