And even if it weren't, sandbox gameplay may fight with other tenets of the design. (zenofdesign.com)
Best - selling author, Kathy Freston, promotes a body / mind / spirit approach to health and happiness that includes a concentration on healthy diet, emotional introspection, spiritual practice, and loving relationships, among other tenets. (mindbodygreen.com)
If you're not familiar with this program, the main idea is that in order to make progress you have to force your body to overtrain then back off and let it recover (there are a few other tenets, including very high frequency training, that I took away from it, but that's the main one). (fitstep.com)