A straightforward 30-second test could forecast your risk of an "early" death. According to a new study, your sit-to-stand power is a reliable indicator of health in later life. Within the context of this research, this relates to how many times you can rise and lower yourself from a chair in 30 seconds. Those who managed this fewer times faced a considerably higher likelihood of dying from any cause compared to their peers. As part of the study, published in the Journal of Sport and Health