Eating a big dinner and sleeping undigested can be a main source of building up toxins which lead to chronic illness. A simple solution is to manage what you eat in the evenings. Eat things easy to digest, best before 6:00-7:00 pm. Dr. Liu of Ming Dynasty (emperor's doctor) left a soup recipe which was a result of over 60 years of research study.
1 medium live carp (or other fresh water fish)
1/2 pound of lean beef (tendon is good)
1 pig foot (or pig ear)
50 grams of hawthorn fruit
10 Chinese red dates
Combine above in a deep pot, add water, bring to a boil, and simmer for 6 hours. Season lightly to taste. Add lemon, vinegar, or vegitable of your choice. Serve soup for dinner. Not to each the solid meat. It's nutritious, and it doesn't build up toxins in the digestive system. Give it a try and let me know how you like it.