Timeline: Get 10% off Mitopure, clinically proven to boost mitophagy. Go to timeline.com/vanessa.

Today’s episode features world-renowned metabolism expert Dr. Eric Ravussin, whose groundbreaking work has transformed our understanding of energy balance, calorie restriction, and long-term fat loss. Dr. Ravussin shares key insights from decades of clinical research on how the body adapts to weight loss—including why your metabolism slows, how to preserve lean muscle, and the critical role of mitochondrial health and metabolic flexibility.

Visit https://ketone.com/VANESSA for 30% OFF your subscription order PLUS receive a free gift with your second shipment—fun surprises like a free 6-pack, Ketone-IQ merch, and more!

We discuss:

• What “metabolic adaptation” really is and how it affects fat loss

• Why your body defends against weight loss more than weight gain

• The role of protein intake in preserving lean mass

• How to counteract muscle loss during caloric restriction

• Metabolic flexibility and its connection to insulin resistance

• GLP-1 medications like semaglutide and their impact on muscle loss

• The connection between mitochondrial function, aging, and energy expenditure

• Why resistance training is essential—especially for women and older adults

This conversation is packed with evidence-based strategies for anyone pursuing sustainable fat loss, muscle preservation, and long-term metabolic health.

Connect with Vanessa on Instagram @ketogenicgirl

Free High-Protein Keto Guide

Get 20% off on the Tone LUX Crystal Red Light Therapy Mask or the Tone Device breath ketone analyzer at Ketogenicgirl.com with the code VANESSA

Join the Community! Follow Vanessa on Instagram to see her meals, recipes, informative posts, and much more! Click here @ketogenicgirl

Follow @optimalproteinpodcast on Instagram to see visuals and posts mentioned on this podcast.

Link to join the Facebook group for the podcast

The content provided in this podcast is for informational purposes only and should not be construed as medical advice. Consult with a healthcare professional before making significant changes to your diet or exercise regimen.

Get 20% off on the Tone LUX Crystal Red Light Therapy Mask at Ketogenicgirl.com with the code VANESSA

In this powerful episode, Vanessa Spina sits recaps the TOP takeaways and insights from her interview with collagen researcher Dr. Shiloah Kviatkovsky to uncover the truth about collagen, joint health, and fat loss for women. She breaks down the science of how collagen peptides impact connective tissue remodeling, the key differences between muscle protein synthesis and collagen synthesis, and why women need to rethink their approach to protein intake—especially during peri- and post-menopause.

She covers how Dr. K detailed her clinical findings on collagen dosage, timing, and pairing with vitamin C, and clears up the confusion around collagen vs. whey or plant-based protein. Whether you’re dealing with joint pain, training hard, or looking to age strong, this episode is packed with actionable insights you can apply today.

🔬 What You’ll Learn in This Episode:

• What collagen is, how it’s formed, and how it differs from muscle protein

• Why collagen is about more than just beauty—and what it actually does in joints, ligaments & tendons

• How bioactive peptides signal tissue remodeling

• What the research says about collagen for joint pain and functional recovery

• How protein needs change in women during the menopause transition

• Why collagen should not count toward your daily protein target

• The ideal collagen dose (10–15g), timing, and co-factors for best results

• Differences between bovine and marine collagen—and which may be better for joints

• Why most women are under-consuming protein and over-relying on cardio

• The fat loss impact of combining resistance training with a collagen + high protein lifestyle

🔗 Resources:

• 🧴 Tone Collagen: Shop here

• 🧠 Follow Vanessa on Instagram: @ketogenicgirl

• 🎙️ Podcast Instagram: @optimalproteinpodcast

Get 10% off Magnesium Breakthrough by BiOptimizers, using the code VANESSA at bioptimizers.com/Vanessa

Connect with Vanessa on Instagram @ketogenicgirl

Free High-Protein Keto Guide: https://ketogenicgirl.com/pages/new-free-ebook

Join the Community! Follow Vanessa on Instagram to see her meals, recipes, informative posts, and much more! Click here @ketogenicgirl

Follow @optimalproteinpodcast on Instagram to see visuals and posts mentioned on this podcast.

Link to join the Facebook group for the podcast: https://www.facebook.com/groups/2017506024952802/

The content provided in this podcast is for informational purposes only and should not be construed as medical advice. Consult with a healthcare professional before making significant changes to your diet or exercise regimen.

Timeline NOW Get 20% off Mitopure, clinically proven to boost mitophagy. Go to timeline.com/vanessa.

In this empowering episode, Vanessa sits down with Dr. Shiloah Kviatkovsky, a leading researcher in collagen supplementation, protein metabolism, and connective tissue health. Together they unpack what actually works when it comes to optimizing protein intake, timing, and supplementation for women focused on fat loss, muscle retention, and active aging.

This conversation covers everything from satellite cells, myonuclei, and muscle protein synthesis to collagen peptides, tendon repair, and skin rejuvenation. Dr. Kviatkovsky shares her latest research on:

• The anabolic differences between animal and plant proteins

• Sex-specific protein metabolism

• How collagen supports joint health, recovery, and visible skin improvements

Vanessa also shares her personal use of Tone Collagen (get 15% off with a subscription) which includes hyaluronic acid and clinically proven peptides that reduce the appearance of fine lines and wrinkles while supporting tendon and ligament resilience. Backed by science and daily routine–approved, it’s a supplement that works for both performance and beauty.

If you’re looking to understand how to use collagen and protein strategically for fat loss and body composition, this episode delivers the truth straight from one of the most respected researchers in the field.

Visit https://ketone.com/VANESSA for 30% OFF your subscription order PLUS receive a free gift with your second shipment—fun surprises like a free 6-pack, Ketone-IQ merch, and more!

Connect with Vanessa on Instagram @ketogenicgirl

📘 Free High-Protein Keto Guide

💡 Get 20% off the Tone LUX Crystal Red Light Therapy line at with the code VANESSA

✨ Join the Community!

Follow Vanessa on Instagram to see her meals, recipes, informative posts, and much more! Click here @ketogenicgirl

📸 Follow @optimalproteinpodcast on Instagram to see visuals and posts mentioned on this podcast.

🔗 Link to join the Facebook group for the podcast

The content provided in this podcast is for informational purposes only and should not be construed as medical advice. Consult with a healthcare professional before making significant changes to your diet or exercise regimen.