If I'm planning on going on a run, I know that I'll feel better once I start running - but it's in the starting that I feel resistance. It's putting on my exercise clothes and slipping on my shoes. It's the getting out the door. Once I start putting one foot in front of the other, it isn't so hard anymore. I mean, sure there is the physicality that can become difficult, but the mental block has lifted. That mental block is Resistance.