Simple breathing and muscle relaxation may ease chemo sleep woes

This study tests whether learning progressive muscle relaxation and deep breathing exercises can improve sleep for cancer patients receiving chemotherapy. About 40 adults aged 40-60 with poor sleep will be split into two groups: one gets relaxation training plus usual care, the other gets usual care alone. Sleep quality will be tracked with questionnaires, sleep diaries, and wearable monitors to see if these simple techniques make a real difference.