Where is the limit of a person? How can you be limited? A person is limited according to his or her attachment. It doesn't matter what you have or what you don't have; it matters only how easily you can let go. Yogi Bhajan
When I am running on the trail I feel free and limit-less, I can let my mind be drift away of worldly obligations. Maybe that is why I love ultra running, get out there and run. Let go and LIVE.