Some yoga poses are easy for us; we like doing them and practice them regularly. Sometimes, however, we try a new pose that stretches muscles we don't often use or requires us to muster up strength. That's when our resistance kicks in.
Let's say you learned a new pose yesterday that was quite hard for you. When it comes time to do it today, you're reluctant. You know how stiff you were in that pose, how little movement you got, and it felt uncomfortable. So you're inclined to skip that one. But those are just the poses your body needs