pandiculation

n. act of stretching one's body or muscles (Medicine)

A yawn (synonyms chasma, pandiculation, oscitation from the Latin verb oscitare, to open the mouth wide ) is a reflex of deep inhalation and exhalation associated with tiredness, stress, over-work, lack of stimulation, or boredom. Pandiculation is the term for the act of stretching and yawning. Yawning is a powerful non-verbal message with several possible meanings, depending on the circumstances. Another speculated reason for yawning is nervousness and is also claimed to help increase the state of alertness of a person - paratroopers were noted yawning right before their first jump. The exact causes of yawning are still undetermined.
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Pandiculation Stretching & yawning; not important, but useful [more]Pandiculation - Community and Resources

Noun
1. yawning and stretching (as when first waking up)
(hypernym) stretch, stretching

n. pandiculation, act of stretching one's body or muscles (Medicine)