Various things that reduce lifespan.
Monster Rancher Metropolis: Monster Rancher 2 Archive (PSOne): Miscellaneous Q&A (Post New Questions Here): Various things that reduce lifespan.
By Radagast the Brown on Monday, March 7, 2011 - 09:02 pm:

I would like to compile a list of things which reduce the lifespan of your monster. Varying levels of stress/fatigue. Any additional weeks lost in battles, errantries, expeditions, drugs, bananas, ect.

If I come back from an expedition and my monster is "pretty tired" what does that mean? 15 weeks? 20?

By Radagast the Brown on Monday, March 7, 2011 - 11:55 pm:

I wish I could delete my own posts. Found what I was looking for. I don't know the site very well yet and I miss things ><

By Lisa Shock on Tuesday, March 8, 2011 - 04:22 am:

I can delete this if you like...