Might be an idea to read them.

Okay let's look at this part....

They found that oxygen consumption rose sevenfold in lab pythons after feeding. This was accompanied by an extraordinarily rapid growth in heart size. The snakes' heart ventricle muscle mass (ventricles are the heart's pumping chambers) increased 40 percent in just two days.

The study team was able to link this sudden growth to increased production of a cardiac protein. The protein is associated with cells that enlarge the heart and boost its pumping capacity, a condition known as cardiac hypertrophy.

The researchers say feeding-induced cardiac hypertrophy likely explains why Burmese pythons pump 50 percent more blood per heartbeat while quietly digesting a meal than when slithering at full speed.
So, basically the process is significantly more physically draining than the snake slithering at full speed. Common sense tells me that I don't want to put my snakes at full gear, burning up that sort of energy every few days. If the goal is to raise healthy snakes that gain weight in a normal manner, how do you accomplish this when encouraging them to pump that much blood, requiring that much more energy draw? How is this sensible?

Previous studies point to why python hearts need to go into overdrive when these animals digest food. Researchers report livers growing to three times their normal size, intestines doubling in mass, and pancreatic enzyme activity increasing threefold. Such changes within the snake significantly raise the demand for oxygenated blood.
So not only the heart (and it's push to pump more blood) go into overdrive but so do many other very vital organs. Now this is what nature intended and designed for snakes. What nature never took into consideration was humans tossing dinner at a snake every 3 days. They are predators and like any wild predator they likely miss more than they catch. Nature never likely intended any snake to eat that often and therefore I do believe that a constant swing into and out of this intensive digestive process and all it entails will eventually take a toll on a snake over it's lifetime. For me, having read all these studies, that just makes sense.