Women, It’s Not Testosterone Driving Muscle Gains — It’s Your Thyroid

Think testosterone is the key to building muscle as a woman? Think again.

In this episode, Gillis & Tarryn break down why thyroid hormone—specifically T3—is the true driver of metabolism, recovery, and muscle protein synthesis in women. We’ll dive into what T3 actually does in the body, how it compares to testosterone, and why “normal” thyroid labs might not be enough if you’re not seeing results from your training.

You’ll learn:
    •    Why T3 is queen when it comes to muscle gain
    •    What happens when thyroid is suboptimal—even if your testosterone is fine
    •    The most common signs your T3 might be holding you back
    •    What labs to look at and what “optimal” actually means

If you’re tired of spinning your wheels in the gym and want a deeper, more personalized approach, we offer 1:1 coaching and functional lab reviews. Whether you’re in a muscle-building phase or working on body recomposition, we’ll get your hormones, nutrition, and training aligned.