I personally believe that a big reason many people fail to maintain a regular program of exercise is that they are trying to go it alone. This chart from the U.S. Department of Labor shows that more than 50% of men and women exercise solo (source). When men exercise with others, it tends to be more often with friends (e.g., I bet it’s team sports). Women, on the other hand, tend to exercise more with family.
I first wrote about Green Exercise in post on trail running last year. It is “physical activity in the presence of nature.” There was some interesting research published that even just 5 minutes of green exercise decreases the risk of mental illness and improves the sense of well-being. While all types of natural environments produced advantages, including green urban environments (e.g., a city park), researchers noted that those that contained water resulted in greater benefits.