Effects of circadian regulation and sleep on immune responses

If you are between the ages of 21-40 or 60 years of age or older, you may be eligible to participate in a free and confidential research study investigating how the immune system changes during the 24-hour human sleep / circadian cycle and to see if age influences these changes. This study involves a 72-hour overnight stay on the Yale campus. Participants will be compensated for each visit. Eligibility is phased based on a list of exclusions and also results of assessments.