Measure Your Feet Day, also known as National Measure Your Feet Day, is observed worldwide every January 23. This holiday emphasizes the importance of wearing properly fitted shoes to maintain health and comfort. It aims to educate individuals about the potential health issues that can arise from ill-fitting footwear, such as blisters, bunions, and chronic pain. To celebrate, people are encouraged to measure their feet's length and width to ensure they select the correct shoe size. The measurement process involves standing on a sheet of paper to mark the longest toe and using a tape measure to determine width. Additionally, individuals with lower limb problems may consider consulting a pedorthist for specialized footwear fitting. The day serves as a reminder that shoe size can change over time due to various factors, including aging and weight gain.