Difference between Loosen Up and Limber Up

LOOSEN UP vs LIMBER UP: VERB

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

To attach a limber
To stretch; stretch one's muscles to make them more limber, as before exercise
Attach the limber
Make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity

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

Laxator, Calistheneum, Ajog, Workout, Oxygen debt, Unsweat, Exercise, Leg curl, Cardiopulmonary exercise, Physical exercise, Physical exertion, Leg exercise, Loosen up, Warm up, Limber

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

Laxator, Calistheneum, Ajog, Workout, Oxygen debt, Unsweat, Exercise, Leg curl, Cardiopulmonary exercise, Physical exercise, Physical exertion, Leg exercise, Loosen up, Warm up, Limber

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?

Father Christmases large and small will limber up at the start line of the Santa Dash in Delamere Forest (above right).
So, limber up your taste buds, get into the spirit of things, and dive into those liver sausage cookies.
Chaparral players Daniel Bingyou and Alex Bender limber up during team practice on Nov. 26, 2007.
If wearing tights to limber up, debilitate the right under garment.
If wearing tights to limber up, wear the right underneath garment.
If wearing tights to limber up, debilitate the right underneath garment.
Limber up and pound the pavement with your pup.
Is it safe to warm up Limber Up before using?