Stress can cause headaches, stomach upset and muscle pain. There are some simple stress relief tips, however, than can help manage stress and improve anxiety. These stress relief tips include getting daily exercise, eating a healthy diet, avoiding caffeine and alcohol, and enjoying hobbies. In addition, herbal teas such as chamomile tea can soothe nerves and promote relaxation. Also, other stress relief tips include getting enough sleep. Poor sleep quality can cause stress, anxiety and even depression.