I remember comparing my real estate investing parents to my friends non-real estate investing parents during the 2008 recession and wondering why there weren't freaking out like everyone else was. They had about 30 units and knew if they held on through the tough times they would make it out okay. They had savings, they had a variety of tenants (some who were affected some who weren't, some were on section 8,) and they weren't over leveraged.
I agree with @Joe Splitrock I've learned FROM BiggerPockets that I needed to have cash in reserves to safely invest in real estate. If newbies like myself actually pay attention to everything being taught here on the forums, the podcast and the books, you'll see they don't sugar coat the fact that in order to be successful in real estate you need savings. I think people just like to skim over that part and focus on the pot of gold at the end. Just because you can purchase real estate with no and low money down doesn't mean you should have no money saved.