Sun, Feb-24-02, 22:29
|
|
Senior Member
Posts: 8,654
|
|
Plan: Atkins-ish, post-WLS
Stats: 408.0/288.0/168.0
BF:
Progress: 50%
Location: Southern Colorado, USA
|
|
That doesn't sound dumb at all.
Your body is an amazing - and amazingly complex - machine. It is quite sensitive to imbalances and quite good at maintaining those balances. But it is not perfect and takes time to adjust to major changes - and changing the very source of every cell's energy from glucogen to ketones is a pretty major change.
All LC diets are diuretics - they make your body dump water (Your body is over 90% water). Actually - and this is my personal opinion - I don't think that it is so much a case of LC diets being true diuretics as much as it is a case of high carb diets making you retain water in order to accomodate the glycogen process. Once you begin purging the glycogen the extra water gets purged as well - and this happens rapidly.
But then your body ends up with too little water as it shifts over to a fully ketone based process and therefore retains some water to come back up where it needs to be. I suspect that this is driven by keeping the electrolyte balance throughout this process and you need more electrolytes for a glycogen process than for a ketone process and that at the low point during the first week you are pretty much purged of both (one is gone and the other is coming on line) and so need even less water. But at this point your body is largely robbed of any fuel and so you are weak and headachy and grouchy until your body gets fully geared up for ketone fuel.
It doesn't take much of a shift in electrolytes to swing your water needs around quite a bit - a gram of sodium extra in your body will require about a pound more of water (I'm going from memory on this so I may be off a bit) to maintain the nominal balance. A shift of only 3% in the electrolyte levels will result in a gain/loss of about five pounds in your case.
Another effect that you will probably have to deal with is the muscle/fat tradeoff and the fat/water tradeoff.
In the first case, you will probably be building muscle as you exercise more and this will build lean muscle mass - making you gain weight. At the same time you are losing fat mass making you lose weight. In any given week, you might gain more muscle than you lose fat - that's good, but it can be hard to convince yourself that this is happening when the scale only reflects the net increase. But a measureing tape will reveal that you are losing inches since lean muscle is more dense than fat.
In the second case you might appear to gain weight (and not see inches go down, either) if your body is replacing the lipids in the fat cells with water in order to maintain their volume and shape. Water is more dense that fat and so you gain weight. Again, this is good. The fat is gone and as soon as your body realizes that it doesn't need to maintain the fat cells in a state to easily accept fat back it will purge the water. Again, that can be frustrating when you go a week and see the scale creep up. But eventually you will see a rapid weight loss of a few pounds. Some people don't see much of this at all and others see it in a very pronounced way - it all depends on how long your body insists on maintaining the fat cell volumes.
Hope that helps.
|