Am I Eating Enough to Lose Weight? Hormones, Metabolism & LEA - Day 66

What happens to your hormones when you don’t eat enough? Can eating too little affect your metabolism, period, estrogen, progesterone, thyroid hormones, recovery, and ability to build muscle? In Day 66 of the Body Recomposition Revolution, we’re talking about low energy availability (LEA) and why eating too little relative to how much you exercise can eventually work against your body-recomposition goals.

Low energy availability is not simply being in a calorie deficit. It happens when the energy you’re taking in compared with the energy you're expending through exercise leaves too little energy for everything else your body needs to do.

We break down how prolonged, problematic low energy availability can affect reproductive hormone signaling, ovulation, estrogen and progesterone, T3 thyroid signaling, leptin, cortisol, recovery, and performance. And surprisingly, you can still have a period while reproductive function is already being affected.

We also look at fascinating research in trained women showing that just 10 days of low energy availability reduced muscle protein synthesis. That's a pretty important finding when your entire goal is to lose fat while maintaining or building muscle.

But here's the distinction I don't want you to miss:

A calorie deficit does NOT automatically damage your hormones.

You can absolutely lose body fat intentionally. The problem is when eat less + exercise more becomes chronic under-fueling.

And this is only Part 1. Tomorrow we're answering the question you might already be asking: If I've been under-eating for years, did I damage my hormones or metabolism, and can I reverse it?

3 DAILY RAC RECOMP TARGETS

TARGET 1: SPREAD OUT YOUR PROTEIN No saving all your food for one giant dinner. Aim for 30–40g of protein at 3–4 meals throughout the day.

TARGET 2: FIND YOUR TDEE Search for a free TDEE calculator and estimate how many calories your body burns per day. You don't need to treat that number as perfect. Today, we're just getting a starting point.

TARGET 3: PRE-LOG TOMORROW Tonight, enter tomorrow's three main meals into your food tracker. You don't need every snack planned. Get breakfast, lunch, and dinner in so you know roughly where your calories and macros are headed.

💪 Want the workouts handled for you? Ready to build muscle while losing fat? Join the RAC Recomp Collective for progressive monthly strength-training programs inside the RAC app. $29.99/month, billed monthly, cancel anytime.

🥗 Not sure how much you should actually be eating? Get a custom RAC macro formulation built around your body, activity, and body-recomposition goals. Email racrecomposition@gmail.com.

📲 Want the visuals and daily takeaways? Follow @RACFitness_ on Instagram for evidence-based body recomposition strategies for women 35+.

🎧 Following the 90-Day Body Recomposition Revolution? Follow the show on Spotify so tomorrow's Part 2 lands right in your feed.

FOLLOW THE BODY RECOMPOSITION REVOLUTION ON SPOTIFY