Devotee (1): You said that if we fast and we can't do our work and we become weak, than this is not so good.
Prabhupāda: This is not good, "not so" not, absolutely bad.
Devotee (1): So, our devotional service comes first?
Prabhupāda: Yes.
Devotee (1): So if there is, let us say there is grain and rice being offered to the Deities, and one finds that if he eats this, his service is impaired. Like so many times I've seen, practically myself if I overeat grains in the summertime, I drive around doing my service and I'm falling asleep.
Prabhupāda: Then which foodstuff suits you?
Devotee (1): Fruits are more... they keep me more active.
Prabhupāda: So you take fruit. Fruit is also offered to the Deity. There are varieties of prasādam. So whichever suits, you can take. Anything artificial is bad.