Dear Greg, >> Oh, man! You're tricky... ;-p I'll have to be more careful when phrasing my questions when I think you'll be answering them. ;-) << ;-) Sorry, I didn't mean to be tricky! The *only* difference between doing your exercises at a specific clock time and at dusk/dawn is that you're using as different type of timekeeper -- a clock vs. the earth. There would be no difference in effect. In other words, whichever suits *you* is "more advisable". ;-) My best to you, :) Rawn Clark 07 Jan 2003 rawnclark@... rawn@... http://www.ABardonCompanion.com http://groups.yahoo.com/group/BardonPraxis