Why is it important too laugh I need it in three paragraphs

Here are 3 reasons why it is important to laugh.

1. It is important to laugh so that people know that you get the joke or are paying attention.

2. Laughter boosts the immune systym.

3. Laughing relaxes your muscles for up to 45 minutes after.

I don't know if you want the answer to be in paragraphs but i can still do it if that is how you want it.