Zenith Within by Sara Redondo, MD, MS
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Cyclic Sighing: The Fast Stress Reset
Discover the Stanford-backed breathing technique that may calm your body faster than meditation and improve daily mood.
10 hrs ago
•
Sara Redondo, MD, MS
10
1
4
The Monotony Trap: Why Your “One-Note” Workout Might Be Stalling Your Longevity
A 34-year study found exercise variety lowers mortality risk by 19%. Learn how to apply it.
May 6
•
Sara Redondo, MD, MS
14
4
The Pesticide Myth: When “Safe” Levels Become Dangerous
Are pesticide limits misleading? Discover how chemical combinations create health risks far beyond individual safety thresholds.
May 5
•
Sara Redondo, MD, MS
17
1
7
The Floor Test: Is Your Biological Age Older Than Your Passport?
Can you sit and stand without using your hands? This simple test predicts longevity and independence. Discover the science and how to improve.
May 4
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Sara Redondo, MD, MS
21
7
Protect Your Brain from Stroke, Dementia & Depression
Discover 3 science-backed habits that protect brain health and reduce shared risks for stroke, dementia, and late-life depression.
May 3
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Sara Redondo, MD, MS
20
6
Peakspan: How to Stay at Your Physical & Mental Best
A practical, science-backed guide to extending Peakspan—your years of peak energy, strength, and cognitive performance.
May 2
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Sara Redondo, MD, MS
20
2
6
The Cognitive Software Update: A Low-Tech Tool That Outperforms Brain-Training Apps
Unlock better focus, mood, and resilience with this neuroscience-backed journaling protocol for cognitive performance.
May 1
•
Sara Redondo, MD, MS
15
4
April 2026
The No-Effort Habit That Mimics High-Intensity Effort
Sitting in a sauna may deliver cardio-like benefits for your heart and brain. Discover how to do it effectively.
Apr 30
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Sara Redondo, MD, MS
22
2
3
The Trojan Horse in Your Closet: The New Backdoor for Toxins
Microplastics in clothing may carry toxins into your body—especially when you sweat. Discover how to minimize your risk.
Apr 29
•
Sara Redondo, MD, MS
10
3
The Best Predictor of Brain Aging You Aren’t Tracking
Discover the overlooked factor that may predict dementia risk and brain health better than sleep hours or supplements.
Apr 28
•
Sara Redondo, MD, MS
12
3
Are You Losing 10 Years of Your Life?
Discover how the British Doctors Study proved smoking cuts life expectancy by 10 years and why quitting at any age can restore longevity.
Apr 27
•
Sara Redondo, MD, MS
12
3
The Shift to Heart Disease Prevention
Discover how the Framingham Heart Study transformed heart health and the proven strategies to prevent cardiovascular disease naturally.
Apr 26
•
Sara Redondo, MD, MS
9
3
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