Examine This Closely: Do You Notice It, Too?

Pay attention to this video. Watch it closely.
Notice how Hillary walks up the pathway to the house.
She seems to walk with a flat, somewhat unsteady gait.
She holds onto the railing - and continues to hold onto it. Contrast that with Joe Biden who hurries out of his car and swiftly moves up the walkway, needing no assistance -- not needing to hold onto anything.
In the house Hillary holds onto a table, a chair -- whatever she can grab to keep herself steady.
We suspect there's something going on here -- something we're not being told about.
I seems there's something that's just not right about this.