The term is heat cycle. It's more a matter of getting everything with a different expansion rate to nestle in good and cozy not just gaskets. There aren't any thermal setting seals in this vehicle.
Drive the car until it's up do normal operating temperature and keep it there for 5+ minutes. Take it home and let it cool completely. Repeat. After about 5 to 10 full heat cycles you should torque the head fasteners and inspect for any leaks. Then, check torque again after a few hundred up to a thousand miles.
I agree with taking it easy even after the first retorque session simply because if you've done something wrong it'll blow with less of a show than if you were racing. Use the time to make sure everything is perfect.
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