The eagle have the potential to live upto 70 years. But do you know that when an Eagle reach the age of 40 years, it's long and flexible talons can no longer grab a prey which serves as food. It's long and sharp beak becomes bent. It's old aged and heavy wings, due to their feathers, sticks to its chest and make it difficult to fly.
Then the eagle is left with only two option: Die or go though a painful process of change; In My term a servicing process.
This process last for 150 days (5 months). The process requires the eagle to fly to a mountain top and sit on its nest. There the Eagle knocks its beak against a rock until it plucks it out.
Then the eagle will wait for the new beak to grow back after which it will pluck out its talons. When its talons grow back, the eagle starts plucking it's old aged feathers.
And after this, the eagle takes its famous flight of rebirth and lives for 30 more years which I call the servicing process.
If both a machine and an animal can have a servicing process, why can't human have a servicing process to live longer. The theories of the human servicing process to expand human lifespan will be explained in the next chapter.