It depends on whether you want to reduce fat, gain muscle, etc. If you want to lose weight, try not to eat more than 4 fruits per day, they are really healthy but has around 100 cal each (depending on the fruit and the size). Awesome smoothies have 3 veggies and a fruit. For example, one tomato, one celery, some spinach and an apple or an orange. The flavors combine perfectly. But also try to eat regular fruit/veggies without blending, it loses fiber when blended...