the idea behind it is that it keeps the body in an anabolic state longer and increases insulin sensitivity, i think. i'm not a scientist; i've just been reading a lot about it on dat's forum.
Erik, i always work out in the morning, unless i work out at night. but it's usually mornings on my 3 days off, and i usually go one night too.
some initial thoughts since starting this (it's still early on): i have had some severe lethargy but at other times i seem more energized. i think once my body gets used to it that the lethargy is gonna dissipate. it hasn't been as difficult as i thought to go w/o carbs, but it's certainly a shock to my body. to be honest, i haven't gotten close to zero carbs yet, i'm still getting trace carbs from veg (broccoli/cauliflower/carrot mix yesterday) gonna cut out the carrots because they are high starch and only very lightly steam the other veg today. i had a small amount of honey last night after the 8 hour carbless (very low carb) period. i might try to extend it beyond 8 hours today; we'll see how it goes.
