24 HOUR BEHAVIORS LABORATORY
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​Meet our Team.

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Dr. Matthew P. Buman
Director & Associate Professor

Dr. Buman received his PhD in applied physiology & kinesiology from the University of Florida and completed a postdoctoral fellowship at Stanford University School of Medicine in the area of epidemiology and the prevention of chronic disease. His research interests reflect the dynamic interplay of behaviors across the 24 hours - sleep, sedentary behavior, and physical activity - and collectively how these behaviors can be harnessed for health promotion. The majority of his work leverages personal technologies (i.e., smartphones, wearables) to intervene on behaviors across the 24 hours and promote health. Matt is married with two children and enjoys brewing beer in his free time. 
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Arlene D. R. Fernandez
Project Manager of Research

Arlene holds a Bachelor of Arts in Psychology and a minor in Exercise and Wellness from Arizona State University, where she proudly earned her degree. She furthered her education by obtaining a Master of Arts degree in Health Psychology from Northern Arizona University. Arlene possesses over a decade of invaluable experience in the field of health research. Currently, she serves as a dedicated Project Manager of Research at the 24h Behaviors Laboratory. In this pivotal role, Arlene adeptly manages a portfolio of National Institutes of Health (NIH) R01 projects, contributing significantly to the advancement of scientific knowledge and healthcare solutions.
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Dr. Krista Leonard-Corzo
Postdoctoral Fellow

Krista is a postdoctoral fellow mentored by Dr. Buman. She is originally from Portland, OR. Krista received her MS and PhD in Kinesiology - Psychology of Physical Activity with a minor in Human Development and Family Studies at The Pennsylvania State University. For her MS thesis, she examined psychobehavioral determinants of postpartum depression. Her PhD dissertation examined prenatal resting energy expenditure in relation to energy intake, physical activity, and gestational weight gain in pregnant women with overweight/obesity in an effort to understand the utility of resting energy expenditure to inform individualized energy intake and physical activity goals to manage weight gain. Her research interests also include the use of mobile health tools within the context of behavioral interventions to promote physical activity, healthy eating, and optimal weight regulation. In her free time, she enjoys running, hiking, watching movies, and scoping out local breweries.
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Dr. Kristina Hasanaj
Research Associate

Kristina is a doctoral student in the Edson College Nursing and Healthcare Innovation program. She is originally from Sterling Heights, Michigan. Kristina graduated with a bachelor's degree in Exercise Science and master’s degree in Exercise Physiology from Central Michigan University. During her master’s, her research focused on wearable devices, exercise, and physical activity. Her doctoral research expands upon that work and focuses on physical activity, sedentary behavior, and sleep behaviors. While also considering the use of mHealth tools such mobile apps and wearable tech as intervention tools. Her dissertation work will stem from the StandUpTV project, examining 24 hr behaviors and health outcomes related to sedentary screen time. She successfully defended her thesis June 8, 2023. In her free time, Kristina enjoys spending time with her family and friends, learning new skills, DIY projects and trying to craft, jogging and being outdoors, traveling, baking/cooking to share with others, and drinking and making good coffee.
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Gillian Reynoso
Graduate Research Assistant

Gillian spent the first three years of her life in Mexico, but has been living in Phoenix, Arizona since. She is an ASU alumna, and received a bachelor’s degree in Biomedical Sciences at the Tempe campus in 2019. She is currently a candidate for a master’s of Medical Studies through the University of Arizona’s Pathway Scholars Program. Physical wellness plays an important role in many aspects of healthcare, and so she is excited to participate in the research that is performed in the 24h Behaviors Lab! During the current pandemic, she spends most of her free time watching Netflix with her parents, meditating, reading fiction novels, hiking, going on walks, and having picnics in the park. She is happy to see so many coffee lovers in this lab, because she also appreciates a good cup. Overall, she is so grateful for this opportunity and is hoping to meet everyone virtually, and eventually in person when it is safe. 
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Emily Marble
Research Technician

Emily is a research technician in the 24 Hour Behaviors Lab. Originally from Albuquerque, New Mexico, she moved out to Tempe for school in 2016 and fell in love with Arizona. She received her Bachelor’s in Psychology from ASU in May 2020 with a minor in biology. She has been involved in many types of research including genetics, social psychology, EEG, statistical methods, human geography, psychometrics, and private sector oncology. Her research interests are mainly focused on applying statistics and data visualization to many different types of data. In her free time she enjoys baking, school (yes, school for fun), road trips with friends, and surfing whenever she can get out to LA.
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Gary Gorman
Administrative Associate

Gary helps Dr. Buman & the Buman Research Team to keep operations organized, efficient, and smooth. He offers a wide range of assistance, from juggling schedules, making travel arrangements, managing office supplies, and whatever else it takes to help the team be more productive. Drawing on 22 years’ experience in Church Office Administration, Gary now focuses mainly on creating order, supporting productivity, and solving logistical problems. Gary has a background in Choral Music, has been a member of the Phoenix Chorale, and has also served on their Board of Directors.
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  • Home
  • Research
    • Our Projects
    • In-Press
    • Peer-Reviewed Publications
  • People
    • Current Team
    • Past Team Members
  • Collaboration
  • Student Information
  • Contact Us
  • Devices