In 12 exercises deploying only body weight, a chair and a wall, it fulfills the latest mandates for high-intensity effort, which essentially combines a long run and a visit to the weight room into about seven minutes of steady discomfort — all of it based on science.
Read more here: http://well.blogs.nytimes.com/2013/05/09/the-scientific-7-minute-workout/?smid=pl-share
