Valentine’s Day comes but once a year, but a good sense of humor lasts a lifetime. Research has shown that laughter can be a powerful tool for relieving stress, enhancing relationships and supporting overall health, according to Help Guide. Laughter can actually improve heart function by boosting blood flow and promoting blood vessel functioning. A good laugh can also bolster the immune system and trigger the release of endorphins, the body’s natural defense against the blues.

There's a lot of pressure every year to make the most of Valentine's Day. To lighten the mood a bit, here are 15 Valentine’s Day Jokes for singles, couples and everyone in between.

1. From

Girl: I can't be your Valentine for medical reasons.

Boy: Really?

Girl: Yeah, you make me sick!

2. From

Q: What did the stamp say to the envelope?

A: I’m stuck on you!

3. From

Q: Why is lettuce the most loving vegetable?

A: Because it's all heart.

4. From

Two antennae met on a roof, fell in love and got married. Their wedding ceremony wasn’t fancy. The reception, however, was excellent.

5. From

I'm gonna spend Valentine ’s Day with my ex...... Box 360

6. From

Q: What's the best part about Valentine’s Day?

A: The day after when all the chocolate goes on sale.

7. From

If it is not Valentine’s Day and you see a man in a flower shop, you can probably start up a conversation by asking, "What did you do?"

8. From

Q: What did one oar say to the other?

A: Can I interest you in a little row-mance?

9. From

A Cub Scout found a frog that said, “Kiss me and I will become a beautiful princess.” The boy studied the frog, then put it in his pocket. “Hey,” the frog croaked, “how come you didn’t kiss me?” “I’d rather have a talking frog than a princess any day!”

10. From

I can't wait for Valentine’s Day because I get to make cupcakes for a special someone and that special someone is me

11. From

Q: What did one pickle say to the other?

A: You mean a great dill to me.

12. From

Q: What do farmers give their wives on Valentine's Day?

A: Hogs and Kisses!

13. From

Q: Why did the banana go out with the prune?

A: Because it couldn't get a date.

14. From Reader’s Digest:

Q: Why should you never breakup with a goalie?

A: Because he’s a keeper.

15. From Reader’s Digest:  

Boy: Do you have a date for Valentine’s Day?

Girl: Yes, February 14th.