(KRON) Science surprises us again. A study finds cracking your knuckles is actually good for you.
Researchers looked at the ultrasounds of 400-knuckles to find out what exactly is going on inside a joint that’s being cracked.
They say those who cracked their knuckles had increased flexibility after doing it.
Scientists think when you crack a knuckle you pull apart two surfaces of the joint.
That brings down the pressure in the joint and allows the gas in the fluid to dissipate.
The lower pressure allows for more laxity.
The study was presented in December at a meeting of the Radiological Society of North America.