The answer is sport knowledge.
Answer:
Regular physical activity can increase the production of hormones that make you feel happier and help you sleep better. It can also improve your skin's appearance, help you lose weight and keep it off,
First of all, <u>"</u><u>Prevention is better than cure</u><u>"</u><u>.</u>
In real life,
If you have enough knowledge to help the injured person then you can do so. Minor injuries can be cured by anyone who has knowledge in human health often known as First Aid. This helps in solving minor situations.
But for major injuries, you have to be a doctor or can only be treated by professionals who is specialized in a certain field, such as medicine.