There seems to be quite a few people on the list who believe ketosis is optimal for health and athletic performance. IMO, there is just no way that athletes should be using anything close to a ketogenic diet (the exception being dieting/cutting phases). Ketones do not burn clean like glucose. They also will cause dehydration moreso than carbs. And even if the body does adapt to ketosis and the frequent urination subsides, it still isn't a good way for your body and mind to be functioning. Glucose is the bodies preferred source of fuel. As far as eating a high diet from meat, I don't belive this is healthy just b/c it's paleo. For starters, eating the fatty cuts of meat that are loaded with saturated fat will negatively effect insulin resistance. So, if you're eating a lot of carbs and fatty meat, of course you won't feel good on a high carbohydrate diet - but it's due to the saturated fat working against the action of insulin in the body, not the carbohydrates. Recently I've been working on getting my bodyfat below 10% for the first time in about a year. And since there's others on the list that are trying to cut up too, I thought I'd share my experience. Since I'm dieting, I'm cycling my carbs around my workouts. Once a week, I do a full body HIT weight workout. Post workout I eat about 6 bananas along with my usual lean protein and healthy fats (olive oil, free range eggs, & cod liver oil). But this will be the only time that I eat that many carbs on weight training days. I get the post workout insulin to counter catabolism, but then the next meal is a no glycemic meal so I get right back into fat burning mode. For cardio, I jog. Recently, I've discovered that I get a much better cardio workout if I jog when it's very cool in either the morning or late night. When I was jogging in the afternoon, I fatigured early due to bodyheat, and although thermogenesis burns fat, a longer cardio worker when it's cooler will also raise bodyheat. The advantage of doing the cardio when it's cool is that I can go for a longer time at a higher intensity. And this means the body will crank out more T3 (the most active thyroid hormone) and adrenaline. For motivation and fun, I take a walkman and jog around a lake. It's easy to clock in a 60 min cardio session with the scenery and music. I just wasn't able to do this at the gym b/c I wasn't enjoying myself. The best way to stick to a cardio program is to make it fun. Believe me, I used to loathe cardio, but now I look forward to my daily cardio session. And when I wasn't dieting, I discovered that both my friend and I functioned much better (athletically & emotionally) when we were eating a 'clean' paleo diet as opposed to some of the saturated fat, low carbs diets employed by many on the list. I think insulin and carbs are just as healthy as glucagon and protein - the trick is to eat the right amount in the proper ratio. When dieting, a trick to staying full is this: I mix the fat with my meal. For example, I heat up 1 can of tuna fish in a skillet. Then I let it cool. Then I put it in a bowl and crack 2 raw, free-range eggs in the bowl. Next I chop up a tomatoe and banana and toss it in there. Then I mix in some mint flavored cod liver oil Now, I know this doesn't sound good (and it even looks like some type of nasty soup), but it tastes just fine. It's high fat and protein with low carbs - it's perfect for fat loss. With the all the fat mixed up in the food like that, it stays in the stomach much longer than separating the fat. If you're not trying to lose bodyfat, then this is an inefficient way to get good digestion. But, when dieting, one of the tricks is to stay fuller longer. This way you don't eat as many calories. And when you're eating below maintenance calories, you're going to lose fat, assuming that you're doing some intense cardio ED or EOD and it just melts off. Just my .02, justin ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com