Optimized Deep Sleep Zone
What this means
Your brain is effectively creating sleep and you are entering and sustaining deep sleep consistently. Your nervous system is well regulated, emotionally resilient, and well supported. This level of sleep acts as a powerful protective and performance-enhancing asset across your lifespan.
Score Range : 40–50
What this affects
Emotional intelligence and regulation
Clear, confident decision-making
Creative insight and problem-solving
Consistent mental clarity and focus
Physical recovery and resilience
Cardiovascular and immune health
Long-term brain protection through detoxification
Longevity, healthspan, lifespan and sustained performance
How the book and Waves 4 Longevity® help
The book reinforces why protecting deep sleep is essential and how to bring awareness to daily choices that can improve deep sleep.
Waves 4 Longevity® focuses on long-term optimization, teaching advanced strategies, including strategic sound stimulation sessions, to preserve deep sleep through life challenges such as travel, high levels of responsibility, stressful situations, life transitions, and aging.
Learn About The Program
Take Back Your Sleep Book
In Take Back Your Sleep, Dr. Ana Casas, MD, and Victoria Dhar, MSc, combine clinical medicine and sleep neuroscience to show how deep sleep drives clarity, resilience, and long-term brain health.
Drawing on real-world work with executives and high performers, they reveal how modern life disrupts sleep, and how to restore it.
“A manual written for the ones who do not just want to live, but want to feel alive, think clearly, recover deeply, and accomplish the goals that matter most to them.”
Victoria Dhar MSc.
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