Answer:
overstimulation is the correct answer
You can find the fabric as most of your fabric stores. The fabric is not one of your more economic fabrics.
With this question firstly you can think beyond football players. Technology can be used to better understand everyone's health, including people and animals. Think about things like injuries that cant be seen, such as concussions. If a football player wanted to better understand their health they could get an MRI or use other forms of technology. Outside of injuries there is also the health aspect, you can check your cholesterol and blood rate and all that very easily now a days, making it quite easy to check if you are healthy.