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.
I often brew a few cups of it, let it steep for a while, add lemon juice and sip on it all day. Carrots are another food rich in glutathione, a protein that helps detoxify the liver. In addition to the detox properties, carrots contain good amounts of vitamin C, B6 and potassium. They also loaded with vitamin A and K, too! It's best to eat these raw.