Why Protein Hits Different After 40: Amino Acids, Muscle, and Midlife Power with Liz Plosser

Liz Plosser is the Founder of the Best Case Scenario Substack, a wellness playbook helping people feel a little better today than they did yesterday. She is the former Editor-in-Chief of Women’s Health, where she oversaw the brand for seven years across its print and digital platforms and various brand extensions, reaching a monthly audience of 44+ million.

A veteran of the wellness industry, she has held senior strategy and content roles at Well+Good, SoulCycle, SELF, & Cosmopolitan. She appears regularly as a speaker and is a frequent guest on national television and podcasts.
Liz is the author of the book, Own Your Morning: Reset Your A.M to Unlock Your Potential. She graduated cum laude from Princeton University, is a NASM certified trainer and nutrition coach, and lives in Brooklyn with her husband, three children and dog.

What We Talk About:

• How Liz went from burning out in finance to running marathons to lifting heavy


• The real reason your old nutrition strategy isn’t working anymore


• Why most women are under-eating protein—and what that’s doing to your body


• What amino acids are (and why they’re your body’s secret weapon after 40)


• How to actually get enough protein without losing your mind


• Why “toning” is out—and muscle is in


• How to use EAAs strategically around training to build and preserve lean mass


• Why She loves Kion EEAs

Key Takeaways:

• Protein is essential, but not for the reason you think—it's not just for muscle, it's for everything: your brain, immune system, hormones, mood, and metabolism.


• Most women are dramatically under-eating protein. 40–60g a day is not enough if you’re training, aging, or want to change your body composition.


• Essential Amino Acids (EAAs) are a powerful tool to close the gap—especially when timed before training or during travel.


• You can’t out-train a protein deficiency. If your training isn't landing, it might be a fuel problem.


• Strength is non-negotiable after 40. It’s the gateway to power, energy, and the body you want.

Power Quotes:

• “It finally looked like I was working as hard in the gym as I actually was.”


• “You don’t just need protein for muscle—you need it to keep your brain, gut, immune system, and entire body running.”


• “Your body’s going to activate protein synthesis one way or another—if you don’t feed it, it’ll steal it from your muscle.”


• “Tracking gives you awareness. Strategy gives you power. But flexibility makes it sustainable.”


• “If you want to be strong, vibrant, and powerful in your 40s—you have to train differently. And you have to fuel differently.”

Connect with Liz:

Website: https://www.lizplosser.com
Instagram: https://www.instagram.com/lizplosser?igsh=MWQ4ZmdzMWswaWZyZg==
Substack: https://lizplosser.substack.com

To save 20% on Kion EAAS, go to getkion.com/warrior

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