Last night students were talking about how some classes are hard, as either others are easy. We learn through the Yoga Sutra, that the “the posture is to be firm and soft.” This refers to the seated position in meditation, for which all asana prepares us.
It all depends upon the practitioner. Some of us need to get stronger enough to have a firm meditation position, which means practice can be hard.  Others need to stretch and soften which may make practice seem easy.  Overall, we are looking for balance between these principles “to set our hearts on what is Everlasting” in meditation as the Sutras say.
Do you need to strengthen or stretch? Which practices will help you balance these principles so you can meditate on the Everlasting? Ki to Happiness stretches, strengthens and sets her heart on the Everlasting.