An invited narrative review published in Intensive Care Medicine described rehabilitation as a core component of modern intensive care, emphasizing that early, progressive, interprofessional rehabilitation across ICU, hospital, and community settings is generally safe and may improve physical recovery following critical illness. The review synthesized evidence from randomized trials, meta-analyses, observational studies, and international guidelines, while highlighting substantial heterogeneity in rehabilitation protocols, implementation barriers, and uncertainty regarding optimal intervention “dose,” timing, and patient selection.