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Old 10-13-2006, 08:54 AM   #1
Neal Winkler
 
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Default Day Vs. Night Feast

Rob, Arthur De Vany and yourself are fond of the 15 hour fast in which the fasting period takes place from 6pm to 9am (is this correct?). According to Dr. De Vany (http://www.arthurdevany.com/archives.../too_much.html) stopping eating 3 hours before bed this creates a greater GH response which improves repair. However, Anthony Colpo referenced a study in which women lost more fat and kept more muscle mass by eating the majority of their calories at night (http://www.theomnivore.com/Straight%...box%2014.html).

Furthermore, consuming carbohydrates clears amino acids from the blood stream which compete with tryptophan (http://www.askdrsears.com/html/4/T042400.asp). So, one would assume that getting this effect would be the most beneficial right before going to bed.

Withg the above considered, and the fact that eating at night would better mimic the ancestral pattern, do you think that a fast which ends later than 9am, say 1pm to 10pm for the feasting period in the 15 hour or 4pm to 10pm in an 18 hour, be more beneficial? Especially if you waited to consume most of the days carbs in your last meal?

Basically, I was wondering if the 6pm to 9am fast was what you and Dr. De Vany do because it works best with your schedules, or if there is a different advantage to it.

By the way, I love the Performance Menu! :-)
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Old 10-13-2006, 09:40 AM   #2
Robb Wolf
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I think eating most of the calories later in the day DOES mimic ancestral patterns and Prof. Cordain seems to think this matters in the big picture. That said it is not hard to: 1-eat most of the calories later in the day and 2-go to bed with a fairly empty stomach. There is no doubt that high circulating fatty acid levels and or blood glucose levels will blunt a growth hormone response. There is also no doubt that intermittent fasting accentuates growth hormone release…so why not do both?

The link to the Omnivore you posted is spot on but one can add to that studies which show iso-caloric high carb diets strip muscle off people while HYPO-caloric ketogenic diets can actually ADD a bit of muscle in people. Anthony alludes to this in his article when he mentions that a low carb diet would likely work even better than the intervention he cites.

I don’t see any of this really being at odds…just tweaks upon a common theme.

For me the earlier eating schedule works as I am at the gym early in the morning and later in the evening to train people but I have the middle of the day to work from home. Perfect opportunity to eat! I have the additional confounder that Chico is getting pretty warm again and when I finish my meals early it is far easier for my body temperature to drop and get some very restful sleep. Eating a meal too close to bedtime can keep me awake just from the raised metabolic rate and attendant heat. Keep in mind that more goes into the sleep process than tryptophan! Acid/base balance, stress levels, body temperature to name just a few.

Let me know if this answered your questions.
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Old 10-13-2006, 09:41 AM   #3
Neal Winkler
 
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Sounds good to me! Thanks for the prompt response! :-)
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