Everyday habits shape how long and how well we live far more than most people realize. Research from sources such as the Harvard T.H. Chan School of Public Health, the American Heart Association, and large longevity studies consistently shows that simple daily choices—how we move, eat, sleep, manage stress, and stay connected—can add or subtract years of healthy life. Many of these habits feel harmless because they are so common, yet over decades they quietly raise risks for heart disease, diabetes, cognitive decline, and loss of independence. This quiz presents 40 real-life habits. For each one, decide whether it is likely to shorten lifespan or harm long-term health. The questions stay practical and straightforward, focusing on behaviors most adults encounter. There are no trick questions—just clear facts grounded in established medical evidence. Score yourself honestly, then read the feedback at the end to see where small, realistic changes could protect the years ahead.