A 2-minute at-home test can offer insights into your life expectancy by assessing lifestyle choices. The "sit to stand test" evaluates heart health, balance, agility, core strength, and leg flexibility. To perform the test, transition from standing to sitting cross-legged and back up using only your legs and core. A lower score indicates a higher risk of an earlier death. However, this test's accuracy is debated, as it relies on correlations rather than causation.