must periodically alternate sitting and standing to relieve pain or discomfort. (If checked, explain in 6.)
must periodically alternate sitting and standing to relieve pain or discomfort. (if checked, explain in 6.)
must periodically alternate sitting and standing to relieve pain or discomfort. (If checked, explain in 6.)
must periodically alternate sitting and standing to relieve pain or discomfort. (if checked, explain in 6.)