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Castore: Built to Adapt

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3 contributions to Castore: Built to Adapt
Fat Loss Decoded — Part 1: Mobilization and Transport (The Most Overlooked Step)
https://www.instagram.com/p/DM21Ta2PFWv/?utm_source=ig_web_copy_link Fat loss doesn’t start with cardio. Or fasting. Or even a calorie defecit it starts with a signal. That signal tells your body, “We need fuel. Tap into the reserves.”But unlocking stored fat is only half the story. The real challenge is getting that fat where it needs to go so it can actually be burned. Let’s break it down clearly: before fat can be used as energy, it has to go through two critical steps lipolysis and transport. Without both, there is no true fat loss. Fat is stored in your adipose tissue as triglycerides three fatty acids bound to a glycerol backbone. These are compact, stable, and metabolically inert. To use them for fuel, the body first breaks them apart. This is called lipolysis. Lipolysis is triggered when insulin is low and counter-regulatory hormones like adrenaline, cortisol, and growth hormone rise. Exercise, fasting, cold exposure, and stimulants can all push this button. The result: free fatty acids and glycerol are released into the bloodstream. But—and this is crucial—those fatty acids aren’t automatically burned.They’re just mobilized. Now they’re floating around, waiting to be used… or re-stored. If the next step transport doesn’t happen efficiently, those fatty acids never make it to the mitochondria. They get recycled, turned back into fat, or contribute to inflammation To reach the mitochondria, long-chain fatty acids require a shuttle system.That shuttle is carnitine. Carnitine binds to fatty acids and helps escort them across the inner mitochondrial membrane. This process is called the carnitine shuttle, and it’s the rate-limiting step in fat oxidation. If this system is underpowered, you’ll struggle to lose fat no matter how “in a deficit” you are. There are different forms of carnitine, each with unique properties. L-carnitine tartrate is used in performance and recovery settings. Acetyl-L-carnitine (ALCAR) crosses the blood-brain barrier and supports both mental energy and mitochondrial function. Carnitine fumarate adds cardiovascular support and works well in metabolic dysfunction. Injectable carnitine bypasses gut absorption issues and results in higher blood and tissue concentrations, making it especially effective when timed around fasted cardio or training.
1 like • 5d
@Anthony Castore Apologies for digging up an old thread, but these days I'm searching here before google for my physiology questions :) I'm considering adding some IM L-carnitine to my routine for LCFA transport and the side benefits of improved receptor response. In terms of timing, I'm reading that with either Oral or IM carnintine, that timing enough fast carbs to poke an insulin response around administration time is beneficial to shuttle the carnitine into the muscle. Wondering if you know just how important this is, as it removes the ability for it to be fasted cardio. Also wondering if the GHRH/GHRP receptors would also improve response from L-Carnitine, and if there would be timing to maximize this potentiation? Same problem with the insulin spike if the carnitine is administered with carbs around these.
0 likes • 4d
@Anthony Castore another excellent explanation, thank you kindly for your time. You answered my subsequent questions triggered by the first part of the answer in the second part. I love this Skool!
Allulose and trehalose
What is Anthony’s opinion on allulose? I know he recommends trehalose, which I’ve also been using lately. However, I’ve been reading a lot of positive things about allulose and its effects on metabolic pathways in the body. What is the difference in their effects in this context? I’m not referring to carbohydrate content, calories, or sweetness, but rather their impact on fat metabolism, glycogen storage, inflammatory processes, and autophagy etc
1 like • 12d
@Anthony Castore Thanks for the very thoughtful reply. Would substituting the trehalose for something simple like dextrose be sufficient to feed and create an insulin spike around the workout?
1 like • 12d
@Anthony Castore thank you again for a thorough informative reply. And an excuse to eat more honey!
Protocol for Epitalon/ss-31/mots-c
Since they all work on mitochondria in different ways if you wanted to do the three in what order would you do the Epitalon and Ss-31? I’m sure mots would be the final stage. How would you run a cycle like this and why? And where would SLU-pp-331 come into play?
0 likes • Mar 26
@Anthony Castore Is there any benefit in adding in Pinealon in stage 1? Would this be best after the 10 days of Epithalon or concurrently with it?
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Josh Blair
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@josh-blair-3869
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Active 14h ago
Joined Feb 27, 2026
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