Shake and Freeze Day is observed worldwide on December 21 every year to raise awareness of Parkinson’s disease. The campaign was initiated by a mother and daughter duo who cared for eight family members diagnosed with the disease, aiming to educate the public and fundraise for charities like The Michael J. Fox Foundation. Participants typically wear shorts on the shortest day of the year, symbolizing the disease's symptoms of shaking and freezing of gait. This date also marks the anniversary of James Parkinson's death, the first doctor to describe the disease, adding historical significance to the observance. People can support the campaign not only by participating in the symbolic act but also by donating to Parkinson’s charities, organizing community events, or volunteering at local assisted living facilities. The campaign encourages the use of the hashtag #ShakeAndFreeze on social media to spread the message further.