Well said.
I too train people full body 6 days per week.
It isn't anything new. In fact, similar to what as you have said, studying the body's natural capacity to move and how it reacts to overload shows us that this method is the best.
Old time strongmen knew this.
Why do thier feats, which were officially recorded, stand as "impossible" today? Why do people think they need the roids? Full body training is the answer, strengthwise.
The funny thing I keep seeing on this site is that people reference the "t-nation" site, yet don't seem to see the info regarding full body training and how it works.
Hasn't anyone researched how and why modern strongman training methods are employed? Is anyone aware that these guys don't isolate? Is anyone aware that a significant portion of them work and rework the same muscle groups daily? If injury or overwork were an issue, they would clearly be weaker, smaller, and more injury prone than the rest of us. -Yet that doesn't happen. And, generally, you then get the usual excuse that it is "genetics".
Full body daily workouts are the great equalizer.
I like to point to my 63 year old dad who does this same style of routine. He is 5'7 and throws around 50 lb dumbbells after a day of ac/htg work. Weekends, he throws around 100lb rounds splitting firewood.
At 63, by modern belief, doing this sort of thing he should be dead, weak, or injured. -At least shrinking muscletone wise. In 6 months, he has gained 1 shirt size, 1 pants size, and stayed the same weight. Fat loss, no prob.
He is the healthiest and strongest he has ever been in his life.
Hmmmm.......