The Japanese long breath diet involves performing specific breathing exercises to increase metabolism, promote relaxation and control cravings for unhealthy foods. The diet was first introduced in Japan in 2007 by a former opera singer named Miki Ryosuke who developed the program based on his findings that deep breathing helped him relieve back pain and lose weight. The program involves three basic breathing techniques: the stomach vacuum, standing abdominal breathing, and walking abdominal breathing. While proponents claim it can help individuals lose weight, reduce stress, improve digestion and increase energy levels, many experts are skeptical of its effectiveness for weight loss. It is important to consult with a healthcare professional before starting any diet or exercise program.