These photos of 90-year-old Japanese men competing in full-contact rugby are all the fitness motivation you need

Stretching before a game becomes even more important when you're nearly 90 years old.

The tackling can be a bit tougher, but that doesn't stop them from putting their heads where it hurts.

Rucks are just as chaotic as they are in other leagues...

...But line-outs prove a bit more difficult, especially with the sun in your eyes.

That one's going to hurt in the morning.

Every club needs a solid number 9...

...As well as a sturdy front row. (scrum hats on, boys)

Flip-flops are a rugby essential for a post-match shower.

As ever with rugby players, however, the after game social remains the most important part.