Final answer:
Pushups are a type of physical exercise that help improve core strength. They involve lowering the body to the ground by bending the arms and then pushing back up again.
Step-by-step explanation:
Pushups are a type of physical exercise that help improve core strength. They involve lowering the body to the ground by bending the arms and then pushing back up again. When doing pushups, the person's weight acts as a downward force on their center of gravity, which is the point where their body's weight is balanced.
Pushups are a great exercise for building strength in the chest, shoulders, triceps, and core muscles. They can be modified to make them easier or more challenging depending on a person's fitness level. For example, doing pushups on the knees or against a wall can be a modification for beginners, while doing pushups with feet elevated or on unstable surfaces can make them more difficult.
Overall, pushups are a beneficial exercise that can be done anywhere, require no equipment, and help improve upper body strength and stability.