The phrase "nutritional punch" means that something has a high level of nutrients that are good for your body, like getting a boost of energy or strength from eating healthy food. Full definition
And they pack added nutritional punch with quinoa flour and flax seed. (wondermomwannabe.com)
7 Grain Pumpkin Chocolate Chip Muffins ~ these amazingly healthy whole grain muffins are light and fluffy but pack a powerful nutritional punch with seven different types of whole grains! (theviewfromgreatisland.com)
The flavor is mild and sweet, but packs a big nutritional punch with the healthy fats your baby needs for brain development. (trueaimeducation.com)