Final answer:
The primary method for developing both speed and agility is through regular physical training and conditioning using exercises such as sprinting, agility ladder drills, and plyometrics.
Step-by-step explanation:
The primary method for developing both speed and agility is through regular physical training and conditioning. This can include exercises such as sprinting, agility ladder drills, plyometrics, and interval training. By consistently challenging the body with these exercises, the muscles become stronger and more efficient, leading to improvements in speed and agility.
For example, sprinting helps to develop speed by training the muscles to contract quickly and generate maximum force. Agility ladder drills improve agility by improving coordination and the ability to change direction quickly. Plyometrics, which involve explosive movements such as box jumps and depth jumps, also enhance both speed and agility.
It's important to note that while physical training is crucial, proper nutrition and rest are also important for optimal development of speed and agility.