The first step is mobilization. How do we get actually fat out of the fat cells so that we can subsequently use it as a fuel source?
Fat mobilization is governed essentially by levels of a hormone known as hormone sensitive lipase or HSL (you can forget the name as there wont' be a test). It's an oversimplification but basically the higher the HSL levels, the higher the fat mobilization.
How do we get higher HSL? Increase catecholamine levels (specifically adrenaline).
How do we do that? Exercise. Particularly high intensity exercise.
But HSL is also limited by insulin. High insulin levels = low HSL levels = low fat mobilization.
So a great strategy for part one is low insulin levels (from diet and training), plus high catecholamines (through intense training).
Part two of the process is transport and oxidation.
If HSL levels are high - fat cells break down into free fatty acids (FFA) which circulate in the blood and eventually end up in a muscle (which needs energy) where they can be burned off in the mitochondria (this is the 'powerhouse' of the cell that your high school biology teacher kept going on about).
But there's another rate limiting step here. Transporting the FFA into the mitochondria where it can be burned off. That transport is controlled by carnitine levels.
If carnitine levels are high - fat transport is high.
Think of carnitine like passport control officials.
If you get off a plane with 500 other passengers and there is one official at passport control - it'll take a long time to get through. If there are 500 officials - then you go through quickly and can leave the airport. (Leaving the airport is the equivalent of fat being burned off). The more officials (carnitine) the easier the process.
So how do we ramp up carnitine levels? Well - again we have a rate limiting step. If muscle glycogen is high then carnitine levels are low.
So if we reduce muscle glycogen through metabolic work - we have the optimal fat oxidation state. Therefore high intensity glycogen depleting exercise is a the tool of choice here.
High levels of fat mobilization + High levels of fat oxidation = Accelerated fat loss.
 
 -------------------------------------------------------------------------------------------------------------------
If you are interested in the warp speed fat loss program, I offer it in two ways. 1) i take you through it personally for 28 days or 2) you can do it yourself in 28 days. The program is complete and is a blueprint for success. Remember that this is a 28 day program to jumpstart your progress or break a plateau. It is very similar to my standard program but it uses low calories and carb cycling for rapid short term results. You can check it out here: