Guys get so caught up on building upper body muscle that some of them sometimes forget to work out their legs. And when they don't, the results can be quite unsightly. Here are 20 guys who will remind you that leg day is just as important. Never ever skip leg day!

1. The Rock with lady legs.

2. Teenage Johnny Bravo?

3. Friends who skip leg day, hang out together.

4. If you want to skip leg day, wear baggy pants.

5. This guy's legs look like they can snap easily.

6. Stud on top, lady at the bottom.

7. If only he paid some attention to those legs.

8. Will your legs be able to support all that weight?

9. Toned upper body, anorexic looking legs.

10. 300 upper body. Sex in the city legs.

11. It's like he got photoshopped.

12. They would look nicer if they were thicker.

13. This guy has no friends.

14. Wolverine? Is that chu?

15. We wonder whose thighs are bigger?

16. He should have cropped the picture.

17. If only there was a leg body-suit too.

18. Dangerously thin legs.

19. Hunk on top. Teenage boy at bottom.

20. The guy who started No-Leg day: