Lying down for 5 days: scientists watch muscles shrink in real time

This study looks at what happens to muscle size, strength, and insulin sensitivity after 5 days of strict bedrest in healthy young adults. Twelve volunteers will undergo tests before and after the bedrest period, including MRI scans, strength tests, and muscle biopsies. The goal is to better understand how quickly muscle loss and metabolic changes occur during short-term inactivity.