ThriveNinety™
Your Partner for Resilience
Restore. Build. Perform.
Translating science into simple, practical tools that help you restore how your body functions, build capacity, and perform at your best.
Connect with Katie & AndreaThriveNinety's Story
“Katie and Andrea help people to be able to live their lives again and do what they want to do.”
Matt Fitzgerald, Author, Ultra-runner, Entrepreneur
Katie Brennan, MSc, is an economist with nearly two decades of experience improving how health systems support people with complex conditions.
Her work has focused on a simple question: What actually helps people feel and function better in daily life?
Across the US and the National Health Service in England, she worked with data, research, and clinical teams to develop approaches that look beyond symptoms—toward root causes, whole-person health, and practical outcomes that matter.
In 2020, that work became personal.
After developing Long COVID, Katie experienced the same uncertainty, fluctuations, and loss of consistency that many people face. Daily life became less predictable. Energy, focus, and capacity were no longer reliable.
Rather than accepting that as the endpoint, she applied her background in healthcare systems, emerging research, and lived experience to find a different path.
Working closely with Andrea, she began testing simple, targeted tools, refining them based on what created real, repeatable changes in how the body functions.
What emerged is the foundation of ThriveNinety:
An approach built to restore function, rebuild capacity, and support consistent performance—whether someone is navigating Long COVID or looking to perform at a high level.
For decades, Katie has focused on helping others reduce the impact of symptoms and regain a greater sense of control, clarity, and capability in daily life.
More about Katie
Andrea Henkel Burke is a multiple Olympic champion and 8Ă— World Champion in biathlon, known for sustaining elite performance over more than a decade at the highest level.
At that level, small changes in how the body functions, timing, coordination, and recovery make the difference between performing and falling short.
Andrea’s career was shaped by learning how to recognize those changes early and respond with the right inputs to restore consistency.
That experience became even more valuable during periods of illness and setbacks, where maintaining performance required more than training harder. It required understanding how to support the body systems so they could function reliably again.
After her competitive career, Andrea deepened this work through advanced training in brain–body systems, including certifications in personal training, psychoneuroimmunology, and methods that focus on resilience, control, and efficient movement.
Her focus is practical:
Simple, targeted tools that improve how the body communicates, stabilizes, and performs—whether the goal is returning from illness or performing under pressure.
Together with Katie, she helped shape an approach that translates these principles into tools that are accessible, adaptable, and effective across a wide range of needs, from Long COVID recovery to high-level performance.
More about Andrea
Together, they bring a unique combination of health science and elite performance experience - applied to help you restore how your body functions, build capacity, and perform more consistently.
The ThriveNinety Approach
If you’ve tried to manage one symptom at a time, or push through fatigue, inconsistency, or plateaus, you may have noticed how limited that can feel.
We take a different path and focus on improving how your body functions as a system. When function improves, energy, clarity, and performance begin to shift together.
We guide you with clear structure, practical tools, and the understanding behind them, while also showing you how to personalize these tools so they fit your situation and your life. You’ll know what you’re doing and why it works.
Designed to be simple and accessible, these tools integrate into your day, wherever you are, on your schedule, with support when you need it.
ThriveNinety Programs
Whether you’re looking to restore function, build resilience, or perform at your best, ThriveNinety offers programs designed to meet you where you are and move you forward with clarity and structure.
Restore - Support for chronic and post-infection conditions
Build - Strengthen resilience for everyday needs and function
Perform -Â Enhance consistency, clarity, and performanceÂ
Control what’s in your Control.
When your progress feels inconsistent, whether in health, daily life, or performance, it’s easy to focus on what’s not working or outside your control.
At the same time, there is more within your control than it may seem.
Your inputs.
Your actions.
What you repeat consistently.
Over time, small, intentional actions shape how your body functions, supporting more clarity, stability, and consistency in how you feel and perform.
How It All Started
When Katie joined one of Andrea’s training sessions, something stood out.
Andrea was naturally integrating brain–body and recovery-focused tools into her sessions. Small, targeted inputs woven in between exercises and workout blocks. These were the same types of tools Katie had identified through research, now applied in a simple, practical way, and lots of them.
As Katie began using them more consistently, what had been theory became tangible: a toolkit that worked in real life.
That experience led to a conversation.
Together, they recognized the gap. Many people in need were missing access to this kind of practical, structured approach. They decided to build something that could reach far beyond a single session.
Why ThriveNinetyÂ
As we began creating our first resources, it became clear that this approach reached beyond recovery. The same principles apply to building resilience proactively and to supporting high-level performance with more consistency and control.
We needed a name that could hold all of that.
We kept coming back to a simple idea: helping people thrive. Not just in one moment, but over time. The “ninety” comes from a personal goal. Andrea wants to still be cross-country skiing at the age of 90.
Ninety reflections on the ability to move, think, and live with energy and independence over time.
That idea shaped ThriveNinety.
Whether you’re recovering, building resilience, or performing at a high level, the goal is the same: supporting how your body functions today so it continues to support the life you want to live.