The longer I am in the fitness industry, the more I realize that we have been doing fitness all wrong. I was raised with an attitude to work hard always. For me that included fitness too. If my heart was not racing, and if everything in my body was not screaming "stop" then I knew I could work harder. CrossFit has helped me realize that true fitness is not just strength or endurance.
I have been doing CrossFit since 2009 and I have been coaching it for one year. True fitness is the ability to do more work over a broad domain in the shortest amount of time. True fitness is not debateable because there is always a winner. It could be just body weight exercises like push-ups, squats, and pull-ups. Or it could be lifting weights like cleans or a medicine ball. Or it could be combination of body weight exercises, lifting weights, and metabolic conditioning. That is when you put it all together. Those are the workouts that hurt the most.
I think the problem we have is that we are not intense when it comes to exercise. Working hard means intensity. We are intense in our jobs, in the education of our children, in our personal rights and freedoms, even in our driving, but when it comes to fitness and exercise we aim for the lowest standard. Walking is a great start if you have never exercised in your life. You must move on from there.
Running is great too but running for a long period of time is not intense. Try sprinting 100-meters ten times in a row with a two-minute rest between each one. The key word here is sprint. That is an all out effort. So make fitness an all out effort. Make it intense! It might be just 5 minutes and that is okay. Whatever you do work at it with all your heart and I guarantee you will see results.
One last thing. Please remember that fitness does not stand alone. In the kingdom of wellness there is a king which is fitness and a queen which is nutrition. If you forget either one then your "kingdom" will fall apart. I just heard from a well-known stregth and conditioning specialist that the best advice to give someone in America is called the "table push-away." Eat less and exercise more. I will leave you with that.