Ease Winter Joint Stiffness with Physical Therapy Your joints wake up slowlyjust like the rest of you., When synovial fluid takes time to circulate, morning stiffness becomes a signal to move mindfully, not aggressively., But if your joints stay Importance of adaptive multimode lubrication mechanism in natural synovial joints ScienceDirect WATERY JOINT FLUID, WHICH OFTEN DEVELOPS AS PETS AGE, LEADS TO PAINFUL GRATING OF BONE UPON BONE.