Let's say that you've been training for the past few months for your first 10 kilometer race. You've studied some training schedules, started out slowly, and built up mileage over time. As you've hit a new threshold of fitness, you've begun throwing in tempo and interval runs to build speed. You've learned about hill work from a fellow runner and incorporated that into your training as well. You also learned that you run fastest if you have a bagel two hours prior to your run, but you only found that out after some misadventures with lasagna. You're ready for the big day; you know your fitness abilities, nutritional requirements, and body better than ever before.
Word of your success has leaked out and a running team of 12 has asked you to help them prepare for their first 10 kilometer! Now you have to understand each runner's fitness level, weaknesses, pain threshold, old injuries (and new ones, too!); you must make weekly adjustments to 12 training plans...