You’re training hard.

You’re eating “clean.”

You’re doing everything right.

So why are you exhausted, flat, and stuck?

In this episode of The Fundamentals of Fitness, Alison explores one of the most overlooked drivers of progress: energy availability.

This isn’t about eating recklessly or abandoning fat loss. It’s about understanding how your body reallocates energy under stress — and why chronic under-fuelling can stall fat loss, suppress hormones, and compromise performance.

You’ll learn:

What energy availability actually means (and how it differs from calorie deficit)

The physiological cascade of low energy availability

Why thyroid output, reproductive hormones, and NEAT shift under chronic restriction

The early warning signs of under-fuelling

How to restore balance without swin ...