It is best if you are neither too hungry nor too full before the massage session. If you are going to have a full meal, it should be eaten at least two hours before the. Learn when to eat before and after, how to prolong your state of bliss, "It's OK to snack lightly right before your massage, and eating a light. Some useful questions and answers about massage therapy. A It is best to not eat for at least 90 minutes before your massage treatment and only a light meal.