BRYAN, Texas (KBTX) - This segment on The Three was paid for and sponsored by Marethouse Fitness. April 18 is a day to encourage and celebrate the many benefits of physical activity! Of course we know that exercise is a great way to improve and maintain your physical health. “Movement is health. It can reduce the likelihood of getting certain cancers, certain cognitive disorders,” David Marethouse, Owner of Marethouse Fitness Boutique explained. “You’ll have more energy. More vibrance.