Infrared Heat vs. Sunlight: Understanding the Differences, According to Science
Is infrared heat the same as sunlight? Explore the science behind infrared saunas, UV light, vitamin D, and the body's response to heat exposure.
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Dr. Rachelle Reed, PhD, MS, ACSM-EP is an exercise physiologist, industry scientist, and science communicator working at the intersection of research, technology, and consumer health. As Head of Scientific Research and Science Communication at Therabody, she leads research strategy, scientific partnerships, and evidence translation across wellness and recovery technologies. She also serves as a Scientific Advisor to Perspire Sauna Studio, is a member of the American Council on Exercise (ACE) Scientific Advisory Panel, and contributes to industry initiatives through organizations including ACSM.
Over the past 15 years, Dr. Reed has advised health, fitness, and wellness organizations on research, product development, scientific credibility, and consumer education. Her experience spans academia, fitness, recovery technology, and digital health, including previous leadership roles at brands such as Orangetheory Fitness, Pure Barre, and Xponential Fitness. She is a frequent media contributor and speaker on topics including exercise, recovery, longevity, women's health, and translating science into practice.
Her work focuses on helping organizations bridge the gap between research and real-world application, ensuring that scientific evidence is communicated accurately, responsibly, and in ways that meaningfully improve people's health and wellbeing.
Read her articles below:
Self-Care Ritual for Stress Relief
5 Ways Perspire Champions Women's Wellness
Men's Health: Alzheimer's Risk, Brain Health and Sauna
How Heat Therapy Supports Your Body's Natural Detox Process
Why the Longevity Mindset Matters - and How Perspire Makes it Achievable
The Science Behind Self-Care Rituals
Finding Strength in Heat: A Perspire Member's Breast Cancer Journey
Infrared Insights: Blood Sugar, Metabolism, and the role of Sauna
Breathe in Wellness with Halotherapy
5 Ways Perspire Prioritizes Heart Health
The Science of Consistency: Build Your Ritual
How Infrared Sauna Supports Brain Health
Infrared Sauna for Metabolic Health: Benefits & Science Explained
Infrared Heat vs. Sunlight: Understanding the Difference, According to Science

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