It's a state of being aware of your thoughts and actions and being in the moment. It helps us to have undivided focus on the present situation and saves a lot of mental and physical energy in the process. It's a kind of on going meditation without having to sit in a particular posture or listening to a particular music. For example, say you are watering the plants. You focus on how the water enriches the soil and makes it moist, the leaves get drenched with the water and turn from dusty to a rich green colour. If you try to immerse yourself in this visual experience it can be quite calming and enriching for your mind. During this time, you might be able to free yourself from the day to day problems of life. The major stressors that upset your mental state and cause you distress. It's really simple yet amazing that how a simple activity like watering your plants or garden can be a relaxing and meditative activity.