The small universe is an excellent daily meditation and you might try to support yourself by doing a little more active meditation (exercises) every day along with your sitting meditation.
The active exercises strengthen the lower and middles dan tiens, providing great energy, and healing the physical and emotional disorders in our body.
I have read that it's possible that people who do a lot of sitting meditation without doing enough active exercise can lose energy or get ill because their lower (jing) dan tien (physical/body) and middle (qi) (heart/emotions/soul) dan tien aren't strong enough for all the work that they are doing in the upper (shen) (third eye/mind/spirit) dan tiens.
Balance is the key in all of this wondrous practice that Master Lin has shared with us.
