@kpmasonry Perhaps I chose a simplistic example, and this might make what i'm saying less clear.
basically water retention, undigested food, glycogen, urine etc all contribute to the "lean mass" reading in a dexa, so they give inaccurate results that appear to show muscle growth when thats not always the case.
The only DEXA place I recommend closes at 10am because they consider any result outside of this time too affected by water, glyogen and food changes to be at all worthwhile.
I think if you gamed the system you could get a DEXA to give a 7lb difference easily - my shifts in scale weight over a day are often 8+ pounds, although I am 235.