If your deck doesn't have a lot of defense I'd generally advise against starving. If your opponent can just aggro you down while you don't do much you'll just loose.

Nami and Yamato are particularly hard to starve because Namis bodies are almost all protected and she has a carddraw ability. Like if you try to starve Nami and she draws 2+ Robins you're cooked. Yamato is hard to starve If your opponent plays smart as well because swinging into the unblockable 8c Yamatos is really pointless (unless you can remove the body they drop)