Results: Poor-grade patients (WFNS 3, 4, 5) (n¼12) received more rehabilitation (median 412min) than did good-grade patients (WFNS 1, 2) (median 240min). Mobilization to 60 of head elevation in good-grade patients began on day one after securing the aneurysm. Out-of-bed mobilization was possible on day three. Poor- grade patients were mobilized to 60 after two days and were out of bed on day seven. At discharge, 67% of poor-grade patients were mobilized to walking versus 78% of good-grade patients. No serious adverse effects to early rehabilitation were observed. Conclusions: Early rehabilitation in aSAH patients is feasible from the first day after securing the aneurysm. The rehabilitation content varied according to the patient’s clinical grade.