In the movie Man of Steel, General Zod and his followers were sentenced to "300 cycles of somatic reconditioning" (not sure if I got that right). What exactly is somatic reconditioning and what does it do to a Kryptonian?

  • It's when they take all their gametes and double the chromosome count.</mad_science_FTW> Oct 26, 2013 at 5:17
  • @dvk somatic != romantic
    – AncientSwordRage
    Jan 9, 2014 at 6:51
  • In light the details from the novelisation, I wondered if you would wish to reconsider your acceptance of @thaddeus' excellent (but speculative) answer.
    – Valorum
    Apr 16, 2015 at 23:13

7 Answers 7


Short Answer

SPECULATION: Since Man of Steel's Kryptonians are genetically engineered for their occupations in life, warrior, scientist, scholar, statesman and presumably others, each lifestyle is assumed to have an ideal state upon birth of what each person is supposed to embody. This technology is supposedly well developed and highly respected for its results.

"Somatic Reconditioning" is a process by which the genetically engineered and bred Kryptonians reapply whatever process defines their occupational development to the cellular structure of the Kryptonian in order to remove deviant or undesirable behavior. As a social measure, it is likely a tool of last resort, since it likely causes permanent and irrevocable change in the person subjected to it. (Better than execution, but just barely.)

Longer Answer

There is likely no canon explanation possible for this statement. That said, I would like to offer a supposition based on the culture of the Kryptonians from Man of Steel and a bit that we do know about Kryptonians in general. It'll be quick.

  • We know that the Man of Steel Kryptonians were all genetically engineered, literally created from a matrix of desirable genetic combinations and were bred to their duties. Zod was a warrior and protector, and Jor-El was a scientist and scholar.

  • The matrix of genetic information which Jor-El entangles with Kal-El's DNA is the information for every Kryptonian there ever was, and now ever could be. Kryptonians (with the exception of Kal-El) were all born in an artificial birthing matrix. Presumably there are other such birthing technologies scattered through former colonies of Krypton.

  • Since the Council considered the followers of Zod, dissidents, perhaps the cultural method of dealing with deviation from the genetic programming one is born with, is to perform "somatic reconditioning" where the process used in the Kryptonian's birth is reapplied to correct for "environmental deviation" (or contamination). This would explain the term completely as somatic means dealing with the body and reconditioning implies some form of adjustment.

  • Such "somatic reconditioning" might act as a form of mental restructuring or dare I say, brainwashing, removing tendencies that might be considered deviant for a society which prizes order and structure above all other things. Since the Kryptonians did not believe in the death penalty (they created the Phantom Zone technology, after all) perhaps "somatic reconditioning" was their method of rehabilitation during a criminal's stay in the Zone.

  • This makes sense in light of the idea the Phantom Zone villains were bound in some unknown material before the strange sarcophagi were sent to the ship that would confine them to the Phantom Zone (presumably for 300 years).

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The Phantom Zone villains encased in an unknown material before transporting them into their prison ship. It is this material, which we see them surrounded in right before they are transported that I speculate the "somatic reconditioning" will take place.

  • Nice answer all in all. But if they could just reprogram them genetically, why would they need 300 cycles? Just in case the first 299 times didn't work? And why send them to the phantom zone in the first place, if you can just strap them in somewhere and reprogram them? Also, Zod and his supporters were obviously able to walk around the ship freely once it had taken off. They had to in order to turn the phantom-thingy into a star drive. I would expect forced reconditioning to look differently. Oct 28, 2013 at 11:48
  • We don't know how long the actual process takes. It could just be a matter of cruelty to make it take longer. As for the ability to walk around that happened after the were free from the zone. Oct 28, 2013 at 14:28
  • Ah - true, they were freed after they returned from the zone. My mistake. I still don't understand why they were send into the zone in the first place. It looks like they were kept frozen in those pods anyway. Shouldn't make a difference where they spend the next 300 cycles then. Or was it perhaps to make sure no one else freed them? Oct 28, 2013 at 18:57
  • I suspect the reason they are placed into the Phantom Zone is to ensure they aren't rescued before their "conditioning" is completed. Since the Council is assumed to have the only Phantom Zone projection system, they would remain locked up until their time was up. Oct 28, 2013 at 20:33
  • 1
    Surely 'cycles' means Kryptonian years, as opposed to 'attempts at reconditioning'
    – AncientSwordRage
    Jan 9, 2014 at 6:55

According to the film's official novelisation, the prisoners were supposed to be kept in a "somatic fugue" (presumably a state of semi-unconsciousness) whilst they were reprogrammed using subliminal teaching methods. The ultimate aim was to eventually return them to normal Kryptonian society as rehabilitated individuals:

“We were friends—until our beliefs drove a wedge between us. I was Krypton’s military leader. My officers and I attempted a coup. We were sentenced to the Phantom Zone, a subspace dimension that exists alongside our own. Your father had developed a projector capable opening a gateway into the Zone. And since capital punishment was deemed inhumane on Krypton,” Zod said with a bitter edge, “we were shunted into the Zone aboard this prison barge. Our bodies were kept in somatic fugue while our minds were supposedly ‘reconditioned.’”
He chuckled bitterly.
“But the destruction of our world damaged the projector and a handful of us were awoken prematurely...”


The klaxon sounded again, signaling the end of the ritual. In theory, every exile was to be released— eventually — after cycles of solitude and subliminal conditioning had curbed their antisocial tendencies. But Lara knew this was unlikely to happen before Krypton perished. Zod had been right about that at least. He and his people had been condemned to the Zone for all time.


Firstly, I would like you to see this question:

Why did Iron Man asks to re-calibrate the useless ISDN?

I would take the term Somatic Reconditioning as a techno-babble. A non-canon explanation would be like: A crime heinous as Betrayal should have a rigorous punishment, one that is very harsh and which sounds like eternity and must seem alien to the viewers of Earth. So lets send General Zod to '300 Cycles of Somatic Reconditioning'. Breaking this phrase, we get:

  • '300 Cycles' would imply 300 Kryptonian Years(or something being repeated),
  • 'Somatic' - of or relating to Somatic Cells which form the body of an organism,
  • 'Reconditioning' - to repair or condition something to make into Good Condition.

Combining these, General Zod and his team is sent for 300 years to recondition their body Cells, the Cells that made them commit the Crime.

  • 1
    I agree, it's a try to mix ideas of retributive and corrective justice in one image, serving the plot
    – Urs
    Oct 30, 2013 at 20:51

300 years of somatic reconditioning basically means banishment to the Phantom Zone.
Here's a quote from the movie:

Lor-Em: General Zod, for the crimes of murder and high treason, the council has sentenced you and your fellow insurgents to 300 cycles of somatic reconditioning. Do you have any last words?

General Zod: You won't kill us yourself! You wouldn't filthy your hands but you'll damn us to a black hole for eternity! [He spits at him in disgust] Jor-El was right! You're a pack of fools! Every last one of you! [He approaches Lara, but is held back by a guard] You…you believe your son is safe…I will find him. I will reclaim what you have taken from us! I will find him. I will find him, Lara. I WILL FIND HIM! [He is silenced as they are banished to the Phantom Zone]

I speculate that "reconditioning" implies that Zod and his followers will be "rehabilitated" after 300 years in the zone.
Clearly Zod was undeterred/unchanged by his stint in the Zone.

This is a new twist on the phantom zone as I don't ever recall it rehabilitating anyone.
The Kryptonians built the phantom zone because they refuse to have a death penalty.
So, the zone is definitely confinement; whether it can "recondition" anyone remains to be seen.

  • ..whether it can "recondition" anyone remains to be seen.. I agree with you on that b'coz Krypton was destroyed after a very short period of banishment, so the effects of 'reconditioning' will not be observed. Nov 1, 2013 at 6:43

It boils down to the difference between pure genetic code and environment- nature versus nurture in simple terms. Why 300 cycles? Why do we imprison criminals for 25 years instead of 22? I suppose that was a specific term prescribed by the kryptonian legal code. Back to what I said earlier- nature versus nurture. Since all traits genotypically were programmed in from birth in all Kryptonians, they came out of the "womb" essentially as a product. In turn, presumably each class would be subjected to specific experiences, conditioning, and training to accentuate and express those traits for which they were created. However, while genotypically the number of traits available (the number of genes and chromosomes) is finite. After formal training the number of experiences and permutations of possible outcomes is infinite. Simply put, you can control the genes but you cannot control the environment. Zod and his Ilk developed aberrations not from their DNA but from their experiences. The sarcophagi and somatic reconditioning, then, created an environment able to be controlled to reprogram the abberancies in behavior.


Unless someone knows of a source from the DC universe to explain the definition of "somatic reconditioning", I think any answers that analyze it contextually are the best. I saw an answer quoting the council's sentence in MOS and agree that Zod's intent was to convey a death sentence. On top of that, Zod was responding to a quote of a councilman, "any last words" that clearly conveys in human nomenclature, a sense of finality, or even death. Coupled with Zod's inflection during his statement, "You won't sentence us to death yourselves, ... So you condemn us to eternity..." you come to the subtlety poetic conclusion that Zod (and his band) are co demned to a punishment worse than life imprisonment, but short of death. Catholics refer to this as purgatory! The writers, Zach, and acting (hats off to casting especially for Zod and Lara-El who completely captures Moses' mom and the essence of The Madonna) and Tech crew all deserve the highest honors and accolades for bringing together one of the finest stories ever told on film.


It's the old trope of "lock you up and modify your personality, thoughts, memories and maybe even body to be more like we want you to". Nothing more was explained, and nothing more needed to be explained. Everyone hates to be reprogrammed, and the amount of hate he showed makes it obviously unpleasant.

It's not clear if the word somatic is just technoblabble. Maybe they really meant that bodily, not mentally, people are being reprogrammed. The interpretation was not given, so only speculation can be offered.

The 300 cycles might be a duration for punishment, might be the amount of scientifically established time it takes to be sure of adequate alternation.

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