original: The early Spartans believed helmets were unnecessary and boxing prepared them for the inevitable blows to the head they would receive in battle.
simplifications: The early Spartans believed helmets were unnecessary.   Boxing prepared them for the blows to the head they would receive in battle. The early Spartans didn't use helments. They believed boxing helped them to be ready for the real battle blows to the head. Early Spartans believed helmets weren't necessary and boxing prepared them for blows to the head in battle. The early Spartans believed helmets were unnecessary. Boxing would prepare them for the hits to the head they would receive in battle. The early Spartans believed helmets were not needed. They thought boxing prepared them for the blows to the head they would receive in battle. The early Spartans believed helmets were unnecessary. They thought boxing prepared them for the inevitable blows to the head they would get in battle. The early Spartans believed that they did not need helmets. They thought that boxing prepared them to get hit in the head during battle. Early Spartans did not use helmets and thought that boxing got them ready for the hits to the head they would get in battle. The early Spartans claimed the helmets were pointless, and the boxing prepared them for the inevitable blows to the head they would have received in battle. The early Spartans believed helmets were unnecessary and boxing prepared them for the unavoidable blows to the head they would receive in battle.