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Gut + Science

Nikki Lewallen Gregory

Gut + Science is a leadership podcast for executives, people leaders, and high achievers who want to build stronger teams, healthier workplace cultures, and higher employee engagement.

Hosted by Nikki Lewallen Gregory, each episode blends people-first leadership, practical leadership development, and real-world insight from executives and thought leaders.

Through candid conversations and powerful stories, Gut + Science explores culture, coaching, communication, performance, employee engagement, and the human side of leadership, giving listeners practical ideas and perspectives they can put into action.

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28 episodes
weekly
Avg 34 min
English

Episodes 28

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May 14 · 29 min
344: How to Build a Growth Function That Lasts with Breanne Byrne
What happens when marketing stops chasing tactics and starts building systems that actually scale? Nikki sits down with CMO and growth leader Breanne Byrne to unpack what it really takes to build a marketing and growth function that evolves with your business and your people. Breanne shares her five-phase department maturity model, from reactive to intelligent, and explains why sustainable growth is never just about channels, campaigns, or tech stacks. It is about clarity, customer experience, role alignment, and servant leadership that helps people do their best work. Along the way, Nikki and Breanne explore AI, change management, team strengths, and why growth that lasts always starts with humans. Whether you are leading a scrappy team, scaling a department, or trying to make change feel more meaningful for your people, this episode will challenge you to think bigger, lead better, and grow with intention. Additional Resources: Connect with Breanne on LinkedIn Learn more about Syntari® AI Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Nikki's Key Takeaways: Scalable growth starts with strong foundations, not random tactics. Clear goals create alignment across teams and departments. AI works best as a human amplifier, not replacement. Servant leadership unlocks stronger teams and better performance. Sustainable marketing requires constant iteration, learning, and adaptation.
May 7 · 28 min
343: Connection First, Culture Follows with Dr. Iain Smith
What happens when workplace culture stops being a program and starts becoming a pattern of connection? Nikki sits down with Dr. Iain Smith, Head of Behavioral Science at Sunny, to unpack why connection is not just a nice-to-have at work, but the foundation for meaningful, sustainable performance. Together, they explore why culture is better understood through behavior, rhythms, and relationships than through buzzwords alone. Dr. Smith shares fresh insights on digital overload, team vibrancy, Gen Z loneliness at work, and why leaders need to stop relying on more tools and start designing better ways for people to connect, contribute, and thrive. From rituals and team energy to the realities of hybrid work, this conversation is a powerful reminder that when connection comes first, culture follows. If you care about people-first leadership and building workplaces that actually work for humans, this one will stay with you. Additional Resources: Connect with Iain on LinkedIn Learn more about Sunny Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Nikki's Key Takeaways: Culture reflects behaviors, not abstract values. Connection is designed through rhythms and rituals. Digital overload weakens depth, not communication frequency. Team energy is everyone's shared responsibility. Young leaders need support, practice, and real connection.
April 23 · 27 min
Addicted to Betterment: Protect Your Time with Nikki and David Gregory
Ever felt like your calendar is running your life instead of the other way around? Nikki and David tackle the ultimate challenge: protecting your time before it slips away. They get real about the pain of saying "yes" when you should've said "hell no," the stress of back-to-back meetings that could've been emails, and the guilt of letting your true priorities, family, health, and dreams, slip through the cracks. But it's not all pain stories. They share how to get back in the driver's seat of your days, from using the Life Wheel to create clarity, to building systems that actually support you, to confidently saying "no" without apology. If you're ready to stop coasting through your schedule and start thriving in it, this conversation is your reminder that time is your most precious commodity… make it count. ⏳ Additional Resources: Follow Addicted to Betterment wherever you listen to podcasts! Connect with Nikki on LinkedIn Connect with David on LinkedIn Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Key Takeaways: Time is our most valuable resource. Clear priorities come from regular reflection. Strong systems protect energy and focus. Saying "no" keeps you in control. Auditing your calendar shows real priorities.
April 21 · 30 min
In the Loop: Building a Culture that Connects and Inspires with Courtney Roberts
What does it really mean to lead with purpose when lives, communities, and futures are on the line? Katherine sits down with Courtney Roberts, President and CEO of the Riley Children's Foundation, to explore how storytelling, empathy, and bold vision can transform leadership into a force for lasting impact. Courtney shares her journey from small town curiosity and global health equity work to leading one of Indiana's most beloved philanthropic organizations. Together, she and Katherine unpack the powerful role leaders play as chief storytellers, bridging mission and meaning while building cultures rooted in trust, innovation, and inclusivity. From engaging the next generation of donors to navigating hard conversations with authenticity and clarity, this episode is a masterclass in people first leadership. If you are striving to connect purpose with performance and lead with both heart and strategy, this conversation will leave you energized and ready to act. Additional Resources: Connect with Courtney on LinkedIn Learn more about Riley Children's Foundation Connect with Katherine Coble on LinkedIn Learn more about Borshoff Watch Gut + Science (and more) on YouTube! Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Key Takeaways: Purpose driven leadership fuels meaningful community impact Storytelling connects mission, donors, and organizational culture Values alignment strengthens internal and external communication Flex communication styles to meet audience needs Access and equity can guide lifelong leadership decisions
April 16 · 19 min
342: One and Only: Owning Your Life Story with Cristian Cibils Bernardes
Your story is not just your past. It is your leadership currency. Nikki sits down with Cristian Cibils Bernardes, founder and CEO of Autograph, to explore the powerful connection between storytelling, identity, and meaningful work. Cristian shares his journey from Paraguay to Stanford, Google, and ultimately entrepreneurship, revealing how a personal quest to understand his own life narrative became a mission to help others preserve and leverage theirs. Together, Nikki and Cristian unpack why owning your story can deepen human connection, strengthen leadership influence, and shape the future of work in an AI-driven world. From family legacy to workplace belonging, this conversation will challenge you to reflect on what you stand for and how your experiences can inspire those you lead. 💡 Additional Resources: Connect with Cristian on LinkedIn Learn more about Autograph Listen to Cristian's podcast: Rabbit Hole Research Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Nikki's Key Takeaways: Your life story shapes leadership authenticity and connection AI can preserve wisdom across generations and workplaces Self-reflection builds clarity, confidence, and meaningful influence Storytelling strengthens relational business and culture building Leaders who share journeys inspire deeper trust and engagement
April 9 · 34 min
341: Using Coaching to Advance Leaders and Organizations with Kate Karre
Leadership today moves fast. New technology, new generations, and constant change can leave leaders chasing the next shiny object. But leadership coach Kate Karre believes the real advantage isn't having all the answers, it's learning how to ask the right questions. Nikki sits down with Kate to explore how coaching helps leaders build self-awareness, challenge limiting beliefs, and become truly future-ready. They share personal coaching experiences, breakthrough moments with clients, and why the next generation of employees expects growth and development from day one. If you want to scale your leadership impact, strengthen engagement, and unlock the potential already inside your people, this conversation will reshape how you think about leadership and coaching. ✨ Additional Resources: Connect with Kate on LinkedIn Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Nikki's Key Takeaways: Coaching helps leaders uncover answers already within themselves Future-ready leadership requires adaptability and continuous learning Limiting beliefs block growth more than lack of skill Self-awareness drives stronger leadership and employee engagement Coaching empowers employees to own their development
April 2 · 36 min
340: The Science of Swag: Creating Brand Experiences That Stick with Crissy Manwaring
What makes a simple branded mug, sweatshirt, or handwritten note unforgettable? Nikki welcomes promotional strategy expert Crissy Manwaring for a fascinating conversation on the deeper psychology behind swag and why meaningful brand experiences matter more than ever. Together, Nikki and Crissy unpack the science of sensory triggers, emotional connection, and thoughtful gifting, revealing how leaders can turn everyday items into powerful cultural touchpoints. From onboarding moments to milestone celebrations, they explore how intentional brand artifacts can strengthen human connection, reinforce belonging, and elevate the employee and client journey. If you lead people, build culture, or care about making your brand truly felt not just seen, this conversation will shift how you think about impact. Get ready to rethink swag as a strategic tool for meaningful work and meaningful lives. 💡 Additional Resources: Learn how to build your strategy to swag! Connect with Crissy on LinkedIn Learn more about Robertson Marketing Listen to Crissy's series on Working Forward, wherever you get your podcasts! Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Nikki's Key Takeaways: Tangible brand experiences deepen emotional connection and memory. Thoughtful swag supports culture, belonging, and retention. Sensory triggers influence perception, loyalty, and brand recall. Personalization transforms gifts into meaningful relationship anchors. Strategic merchandise enhances every stage of employee journey.
March 26 · 40 min
339: Cultures of Caring: Turning Grief into a Leadership Growth Opportunity with Ashley Jones
Grief doesn't clock out when we clock in. Nikki sits down with Ashley Jones, founder of Memento Foundation and grief and empathy consultant, to explore what happens when loss walks into the workplace. After navigating the unimaginable loss of her daughter, Ashley turned her pain into purpose, helping organizations lead through grief with courage, care, and emotional intelligence. Together, they unpack what most leaders get wrong about grief at work, why empathy is not optional in modern leadership, and how cultures of caring are built long before crisis hits. This conversation challenges outdated beliefs about productivity, exposes the real cost of emotional avoidance, and offers a new leadership standard rooted in love, trust, and psychological safety. 💛 If you want to retain top talent, strengthen trust, and lead whole humans instead of job titles, this episode will change the way you show up. Additional Resources: Connect with Ashley on LinkedIn Get Ashley's book: "When You Can't See the Light" Learn more about Momento Foundation Learn more about Bereave Watch Gut + Science (and more) on YouTube! Connect with Nikki on LinkedIn Follow PeopleForward Network on LinkedIn Learn more about PeopleForward Network Nikki's Key Takeaways: Grief has no timeline or linear stages. Empathy is leadership strength, not softness. Culture of caring must start before crisis. Unsupported grief drives turnover and disengagement. Love, not fear, builds workplace trust.

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