Sushi in moderation is fine, make a healthy choice in choosing the kind you eat. Keeping your drink of choice for lunch water as well. Perhaps, the raw tuna or shrimp w/ lettuce and cucumber.  Avoid too much sauce such as the soy sauce or the sauce they use for the spicy tuna roll.  Don't restrict yourself from things that you want, if you have had a great workout, it's ok to treat yourself to sushi, in a portion that isn't too large.