Collaborative groups and cooperative learning refer to a variety of structured classroom management techniques and grading systems developed and studied by Aronson, Johnson & Johnson, Kagan, Slavin, and others since the early 1970s.
But within the realm of your food choices, including red beets and their green tops, Yukon gold and sweet potatoes, avocados, oats, and cod liver oil in your diet are simple and concrete steps that you can take right away to improve the health of your digestive system.
Herbalists have known for centuries that certain plants, especially those that are bitter or aromatic, can aid digestion, reduce digestive discomfort, and actually improve the daily function of the digestive system. Bitters also help to feed the micro-bacteria that becomes healthy intestinal flora.