How We Trained for a 20,500ft Himalayan Climb as a Family

My family, including my wife and twin 11-year-olds went on expedition to climb Kang Yatze 2 (20,505' or 6250m) in the Indian Himalaya. We needed to train to make sure we could accomplish the vertical gain, carry the weight, stay on the move for long durations, or the trip would just be suffering with little fulfillment. Here's how we planned and executed our pre-climb training.