Frailty, the decline in physical and cognitive reserves leading to vulnerability to stressors is increasingly being recognized as a public health concern. Although multiple measures exist that can identify frail patients, very little is known about how or when to intervene. Sarcopenia, or the degree of muscle wasting, is closely correlated to frailty and patient outcomes. This is a prospective cohort study of critically ill patients to identify modifiable risk factors of sarcopenia, as potential targets to reduce frailty.