I am a grain of wheat, pleasant and wholesome food, which flows in a stream of digest

I am a grain of wheat, pleasant and wholesome food, which flows in a stream of digestion, becomes a healthy and agreeable stream of life, and is again swallowed in a little wave of digestion, which is again digested, and so on, until it is pleasant and healthy food, and pleasant and healthy life, again becomes a little wave of digestion, and so on, until it is again swallowed, and again becomes pleasant and healthy food, and pleasant and healthy life, and