Aging and Exercise Impacts on Glymphatic Function

The purpose of this research study is to understand how the human brain removes amyloid beta (Aβ) protein which can lead to Alzheimer's disease (AD), using non-invasive magnetic resonance imaging (MRI) techniques. Participants will first go through screening including health survey and blood draw. Depending on their age, enrolled participants will take neuropsychological assessment, sleep and quality-of-life survey, exercise testing, MRI and positron emission tomography (PET) scans. Depending on individual age, the study may include up to three separate visits, a blood draw, an MRI visits and a PET scan visit. The greatest risks of this study include the possibility of injury during the exercise testing, MRI and PET scans, and loss of confidentiality.