Difference between Loosen Up and Pandiculation

LOOSEN UP vs PANDICULATION: NOUN

A stretching and stiffening of the trunk and extremities, as when fatigued and drowsy.
A stretching of one's self, as when one is newly awaked from sleep, or sleepy or fatigued; a restlessness and inclination to stretch observed at the outset of certain paroxysms of fever, hysteria, etc.: sometimes, somewhat incorrectly, used in the sense of ‘yawning.’
Yawning and stretching (as when first waking up)

To relax, act less seriously.
To become loose; to loosen
Cause to feel relaxed
Make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity
Cause to become unblocked
Become less tense, rest, or take one's ease
Become less tense, less formal, or less restrained, and assume a friendlier manner

Fatten up, Eke out, Morning sickness, Sniff out, Unstuff, Unstrain, Unlax, Make relaxed, Limber up, Decompress, Unbend, Unwind, Relax, Slow down, Warm up

Gourdy, Dogsleep, Sloomy, Wrick, Oscitate, Oscitancy, Limber up, Oscitation, Nod off, Stretch, Doze off, Tentiginous, Sloom, Yawn, Oscitant

Wipe away, Make headway, Body odor, Snuff out, Sit tight, Fatten up, Eke out, Morning sickness, Sniff out, Limber up, Decompress, Unbend, Relax, Slow down, Warm up

Gourdy, Dogsleep, Sloomy, Wrick, Oscitate, Oscitancy, Limber up, Oscitation, Nod off, Stretch, Doze off, Tentiginous, Sloom, Yawn, Oscitant

Your muscles really loosen up in heated water.
Great reminder to loosen up and have fun!
Do easy stretches to loosen up your muscles.
The straps can loosen up as you drive.
NEVER had one loosen up since I changed.
Turn the speakers up a little louder than you normally would will help loosen up the material.
Things are stating to loosen up as state parks and boat launches open up.
In sum, my internal workplace advice is: open up, loosen up, listen up, speak up, and don't work weekends on anything you don't enjoy.
However, they tend to loosen up after washing up for a few times.
Should I dig up and loosen up the rootball?

Pandiculation is a very positive sign leading into convalescence, but if it continues and persists relentlessly, it indicates a deterioration.
Pandiculation consists of successive stretching of all muscles accompanied by a pleasant sensation and generally followed by yawning.