My reaction to this is similar to this one: http://norvig.com/21-days.html (Teach Yourself Programming in Ten Years) I've been exercising regularly for a long time and know pretty well what my "equilibrium" exercise time is, and it's about 5 - 6 times longer than 7 minutes. If I thought it could be shorter, then I would make it shorter because my #1 goal is to minimize the number of minutes of my life I spend on exer…
If it makes you feel better, each hour you spend exercising extends your life by around 3.5 hours (net 2.5 after the hour you spent) on average. These are just rough numbers, backed up by the Framingham heart study and an analysis of the Framingham data by Jonker, et al.: http://care.diabetesjournals.org/content/29/1/38.full.pdf They say 2.5 hours per week over a 75 year lifetime makes you live 3.5 years longer, and…
That is significantly overstated. The study did not establish causation, only associations. The most that can be claimed is that A was predictor of B for group C.