Running strengthens heart and lungs.

Meaning: The activity of running makes the heart and lungs function better.

Choice of Words: Running is an activity where you move quickly on your feet. Strengthens means to make something stronger. Heart is the organ that pumps blood throughout the body. Lungs are the organs that help us breathe.

Alternative Expressions

Running makes your heart and lungs strong.

Meaning: This sentence means that running helps to make your heart and lungs stronger. When you run, your heart has to work harder to pump blood throughout your body, and your lungs have to work harder to take in oxygen and release carbon dioxide.

Choice of Words: The word "running" is a verb that means to move quickly on your feet. "Makes" is a verb that means to cause something to happen. "Heart" is a noun that refers to the organ that pumps blood throughout your body. "Lungs" are nouns that refer to the organs that help you breathe. "Strong" is an adjective that means having a lot of power or force.

When you run, it makes your heart and lungs work better.

Meaning: This sentence means that running helps to improve the function of your heart and lungs. When you run, your heart has to work harder to pump blood throughout your body, and your lungs have to work harder to take in oxygen and release carbon dioxide. This increased workload helps to strengthen your heart and lungs and make them more efficient.

Choice of Words: The word "when" is a conjunction that is used to connect two sentences. "Run" is a verb that means to move quickly on your feet. "Makes" is a verb that means to cause something to happen. "Heart" is a noun that refers to the organ that pumps blood throughout your body. "Lungs" are nouns that refer to the organs that help you breathe. "Work better" is a phrase that means to function more efficiently or effectively.

Running is good for your heart and lungs.

Meaning: This sentence means that running is a beneficial activity for your heart and lungs. When you run, your heart has to work harder to pump blood throughout your body, and your lungs have to work harder to take in oxygen and release carbon dioxide. This increased workload helps to strengthen your heart and lungs and make them more efficient.

Choice of Words: The word "running" is a verb that means to move quickly on your feet. "Is good for" is a phrase that means to be beneficial to something. "Heart" is a noun that refers to the organ that pumps blood throughout your body. "Lungs" are nouns that refer to the organs that help you breathe.

Related Expressions