239. Creatine, Aminos, and Why Muscle Matters More Than Ever with Liz Plosser

Apr 28, 2026
Creatine, Aminos, and Why Muscle Matters More Than Ever with Liz Plosser
 

In this episode, I’m joined by Liz Plosser to talk about essential amino acids, creatine, protein, aging, and why muscle matters so much for women. We break down the difference between protein powder, creatine, and EAAs, talk about why recovery and muscle preservation become even more important as we age, and get into the bigger picture of supporting your body well in every season.

This conversation is educational, but also really empowering. We talk about the pivot that happens as women get older, why your body may need different support than it used to, and why that does not mean you are broken. It means it is time to get smarter about how you train, recover, and fuel.

Liz shares why women need to care about more than just hitting a protein number, especially as they get older. We talk through how EAAs, creatine, and protein powder all play different roles, why muscle preservation becomes even more important in midlife, and how these tools can support recovery, energy, and long-term health. We also touch on GLP-1s, under-eating, lean muscle loss, and why strength training needs to be part of the conversation.

Episode Recap:

  • protein, aging, and why women may need more support over time
  • essential amino acids vs. creatine vs. protein powder
  • how EAAs help support muscle protein synthesis and recovery
  • why creatine is beneficial for women at every stage
  • why supplements like these can help fill the gaps
  • the importance of protecting lean muscle mass
  • what women should know about GLP-1s and muscle loss
  • why strength training is a non-negotiable for healthy aging

Links/Resources mentioned:

More about the Unf*ck Your Fitness Podcast:

If you've tried all the fad diets and are sick and tired of not achieving your health and fitness goals long-term, you've come to the right place! Welcome to the Unf*ck Your Fitness Podcast with me, Kristy Castillo. I'm here to help you break the annoying diet cycle, gain confidence, and reach your health and fitness goals. 

This podcast will show you how to be proud of the body you have, build the body you want, and enjoy the process along the way. I'll cover topics like how to get the most from your workouts, the importance of feeding your body what it needs, and key mindset shifts that will empower you. I've broken through the BS surrounding diet culture and built my dream body, all while being a busy wife, Mom and business owner, and I know you can too!

Connect with me on Instagram at @kristycastillofit

Learn more about working together by visiting my website: https://www.kristycastillo.com/

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