The study, led by the Barcelona Institute for Global Health, a center supported by the "la Caixa" Foundation, analyzed data on 59 people.
Over the course of a week, participants spent 20 minutes each day walking in a blue space. During a different week, they spent 20 minutes a day walking in an urban environment. During yet another week, they spent the same amount of time resting indoors. The blue space route was along a beach in Barcelona, while the urban route was along city streets. Before, during and after each walk, researchers measured the participants’ blood pressure and heart rate, and used questionnaires to assess their well-being and mood.