The question is - am I doing enough exercise?
I intend to provide a worked example for you to work alongside with your own calculations and decide if you should increase or decrease your exercise.
The benefits of physical activity are various and this calculation can be done for one or all of them; some of them include:
- longevity of life
- current physical health (ability to enrich your current life with physical activity)
- happiness (overall improved mood)
- weight loss
- feeling like you have more energy
- better sleep
- better sex
- fun while exercising
- reduce stress
- improve confidence
- prevent cognitive decline
- alleviate anxiety
- sharpen memory
- improves oxygen supply to all your cells
- 3 years for the first 15 minutes a day and a further 4% reduction in mortality for every 15minutes after that
- every minute of exercise returns 8 minutes of life
- being normal weight and active conveys 7.2 years of extra life expectancy
- 75mins/week of brisk activity = 1.8years of greater life expectancy with more activity giving upwards to 4.5years of longevity
That was rather my point. (Note that I said "10 years or more".)
[EDITED to fix a trivial typo.]