Gardening offers many more benefits than just healthy fruits and vegetables. Recent studies show that gardening reduces stress and improves mood when people spend 30 minutes a day in their gardens. It is also a great source of exercise. While gardening is not a great cardiovascular workout, the repetitive tasks of digging, weeding, and planting are effective forms of low-impact strengthening and stretching.
Besides being good for the mind and body, garden preparation is key to successful growing. Once weeds are removed and soil is ready, seeds have a healthy place to grow. Time and energy spent preparing a garden reduces the amount of time that would be spent maintaining the garden throughout the growing season.
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What is one of the central ideas of the passage?