SOLOCAST The Truth About Cortisol: Fasted HIIT, Breakfast Timing, Perimenopause & More

SOLOCAST The Truth About Cortisol: Fasted HIIT, Breakfast Timing, Perimenopause & More

Author: Tara Garrison January 2, 2026 Duration: 43:05

Tara Garrison is a leading health optimization coach, founder of HIGHER Coaching —a coaching program focused on training, nutrition, mindset, and biohacking for high performers, including celebrities, professional athletes, and executives.

She is the author of Short-Term Keto, creator of the Coach Tara App and HIGHER Retreats, and a passionate advocate for metabolic flexibility and evidence-based wellness.

A mom of four, avid weightlifter, and Boston Marathon finisher, Tara empowers people to achieve peak physical and mental performance without burnout.

In this episode, Tara debunks common myths about cortisol, reframing it as an essential energy-mobilizing hormone rather than just a stress villain. She addresses fears around fasted HIIT training potentially causing fat gain, exhaustion, or hormonal disruption—especially in perimenopause—emphasizing that acute cortisol spikes are normal and issues often stem from broader factors like underfueling, poor recovery, and life stress.

Tara also covers misconceptions about breakfast timing, supplement use without testing, and assuming symptoms like burnout always mean high cortisol, advocating for proper testing and personalized approaches.

  

RESOURCES:

 

CHAPTERS:


00:00 – Intro: Addressing common cortisol myths and misconceptions circulating online
01:02 – Sponsorship mention (Peluva minimalist shoes)
02:54 – Overview of cortisol testing (DUTCH Plus and saliva tests vs. blood tests)
04:05 – Myth 1: Fasted training (like HIIT) causes dangerously high cortisol, leading to fat gain
12:05 – Myth 2: Fasted HIIT universally "wrecks" hormones (e.g., sex hormones).
20:28 – Myth 3: Symptoms like stress, burnout, and weight loss resistance always mean high cortisol.
26:22 – Myth 4: Using supplements to "balance" cortisol without testing.
31:38 – Myth 5: You must eat breakfast within the first hour of waking to prevent cortisol spikes.
42:30 – Nuance/avoiding oversimplified advice

 

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Tara Garrison hosts Inside Out Health, a conversation that starts from the premise that lasting well-being isn't found in a quick fix, but through a more nuanced exploration of our own biology and mindset. This podcast moves beyond surface-level advice, weaving together perspectives from biohacking, intelligent nutrition, purposeful training, and genuine self-development. Each episode is a deep dive with specialists and practitioners, all aimed at untangling the complex connections between physical resilience and mental clarity. You'll hear practical, often unconventional strategies for tuning into your body's signals and building sustainable habits. The dialogue is grounded in the idea that the capacity for a healthier, more vibrant life is an internal discovery process. For anyone curious about moving past generic health trends to understand the personalized mechanics of their own potential, this series offers a thoughtful and investigative space. Tune in to Inside Out Health for a nuanced journey toward what the next level of human health can actually feel like, from the inside out.
Author: Language: English Episodes: 100

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