expression, godan verb (-su)
stretch out one's limbs; relax by stretching
Literally means to stretch out one's arms and legs, often used when relaxing after being in a cramped position or to relieve fatigue.
長いフライトの後で、空港のベンチで手足を伸ばした。
After the long flight, I stretched out my limbs on a bench at the airport.
ちょっと手足を伸ばし
Let's stretch out a bit and then get back to work.