First, I was shocked that I hadn't seen this here already. So while this certainly means very little in the grand scheme of things, let's take a look at Mario Edwards Jr putting in some off-season work:

BIG MAN (290) with feet #97 #EdwardsLegacy #JUSTWINBABY #raidernation

A video posted by Mario Edwards Jr (@97_rio) on Mar 1, 2016 at 7:57am PST

It should be noted that 4 weeks ago he posted another short video out on the field, and the caption included a "major comeback":

Video says it all giving the man above all the praise

A video posted by Mario Edwards Jr (@97_rio) on Jan 28, 2016 at 9:24am PST

Here's hoping that he's completely healthy and ready to go. I think physical activity out on the field is a very, very good sign.