While this may seem like a no-brainer, the stress and tension relief that a spa getaway can bring have been scientifically proven time and time again. Regardless of the duration of the spa retreat and the spa treatments you select, the fact that a spa holiday takes one away from the hustle and bustle of everyday life means that stress levels decrease naturally. The calming and serene atmosphere inside spas and healing centres also lends to relieving stress as it is a world away from the stressors of your work and home life. Whether you sign up for a simple facial or a full body massage, the mental health benefits are simply invaluable.