<s>[INST] I feel tired most of the time and sleep all night and when i get home from work. At work i feel tired and my body feels heavy, my chest feels tight and i breath shallowly. I feel like falling asleep and have strated to get angry alot easilier. My eyes are also very tired and i want to close them for releaf. I also find it hard to smile because my face feels strained most of the time. What could be the cause of these things? [/INST] Abnormal sleep is a common problem. It is often present in people who are overweight, particularly those who snore. If you are very tired in the morning, sleep easily during the day and snore loudly, you may have sleep apnea. Sleep apnea may cause or worsen high blood pressure. Sleep apnea is a common cause of abnormal heart rhythm requiring treatment. You should discuss these problems with your doctor and consider assessment for sleep apnea. </s>