TThe Cross-Legged Sit-To-Stand method is a powerful longevity prediction tool & is a vital function to determine physical ageing. Mastering the Cross-Legged Sit-To-Stand method with ease & grace can be a powerful tool in predicting longevity & ageing gracefully. Floor to stand ability is a test of functional fitness for seniors and a predictor of independent living. Loss of ability to perform this function are more likely to require nursing home care, shortening their life span by up to 7 years