Just to clarify, I have already been observing Upsotha for a few months, so not eating after noon will not be a problem. I was just interested in how others chose to observe this specific precept. And in that regard, David, the thread you pointed out was very helpful and exactly what I was looking for. After reading it I have decided to go ahead with the one-sessioner's practice. I found it odd that so many people were worried about it being detrimental to health. Technically it is a short intermittent fast, which research indicates has many health benefits. In any event, I'm not taking it up for that reason. More along the line of reasoning pointed out by Chula in the other thread:
Regardless, eating just one complete meal for the day has many benefits when one gets used to it, among them:
* Much less time of the day worrying about food, more time to practice
* Much, much less sloth & torpor since there isn't the drowsiness after the meal (this is mentioned in multiple places in the suttas)
* Great way to practice appropriate attention (yoniso manasikāra) - because even after having multiple meals, improperly attending to food can lead to sensual cravings that can be mistaken for hunger. When having just one meal for the day this is brought right into the middle of the picture - there is no running away from sensual desire - you have to deal with it right then and there. As a result mindfulness & alertness (satisampajaññā) gets a decided boost, and you start seeing the purpose of sense restraint (indriya saṃvara) - which is a cornerstone of the path.