1. REM Sleep And Its Effects On The Mind And Body
... wake up, perhaps helping to explain why heart attacks are more common in the morning. One way to protect people who have heart trouble is with beta-blockers, drugs that blunt the effects of stress hormones on the heart. During most stages of sleep, the heart rate and blood pressure fell and the sympathetic nervous system grew less active. During REM sleep, however, the heart rate and blood pressure rose to ... the level seen during waking hours, and the sympathetic nervous system spurted to twice the normal state during the day. REM sleep accounts for about ... just before they awaken ...
- Word Count: 2618
- Approx Pages: 10
- Has Bibliography
- Grade Level: High School