The objective of internal practice is to improve through the refinement of physical movement and stillness using volition to develop a greater sense of ease and flow that is of a higher quality of energy. It is best done subjectively. Constantly evaluating one’s own maintenance, improvement, or atrophy. Don’t turn it into an external competition against others.
Just because we do it, does not mean it is working. Why, what, and how are the trinity of learning. Study and practice are it’s pillars. The mind’s intelligence, emotional state, and spiritual will are just as important as what we experience viscerally from the body.
Make the mind and body stronger by noticing the holes in the bucket and repairing them. Qigong exercise is a venue to find flaw and improve our condition using the appropriate means. Beware of identifying the problem, but applying the wrong cure.