What do you do to warm up?

If I try to jump directly into multiplayer, I will embarrass myself and bring down the team, so I try to always do Spartan Ops mission on Legendary first. I’m starting to think though that this might not be the best option, since having unlimited lives against powerful enemies somewhat encourages a brute force approach, and since these are aggressive enemies that will hunt you down, much different from the constant camping that defines multiplayer. I think I might start doing some campaign challenges, even though the Mythic skull makes them a pain in the -Yoink-.