I was excited to learn what autography is but it looks like a typo.

Autophagy is the biological process of cleaning, correcting, and kind of like defragging.

Proteins need to be cleaved down to their amino acids and further to their atomic elements after use and resorted and sent back as raw materials to make DNA, RNA, and more amino acids.

Errors (misfoldings) continue to replicate through mitosis and if they aren’t caught then you get cancers, so occasional autophagy is important to ensure that you’re making the right proteins.

I recommend “The Switch” by James Clement for further understanding on this.