4. A brief self-healing: In fact, for a morning of learning our bodies there will be some damage to the lunch break a short time, you can let us conduct some short body to repair itself.
4. Short-term self-healing: a morning of study will actually have some damage to our body, come to a short lunch break, can let our body to carry out a short self-healing.
4. Short term self repair: a morning's study will actually cause some damage to our body. A short lunch break can help our body repair itself for a short time.<br>