I used to eat a banana after eating a bowl of ice cream.

Later in life, I got into bodybuilding for a period of time.

In the gym (where I was pretty much every day of the week, sometimes twice a day), I would hear the trainers use the expression, "you can't outrun a bad diet."

What they meant was, it doesn't matter how hard you work in the gym: if your diet isn't in order to start with, you cannot, will not get the results you want.

Essentially, it didn’t matter how many miles I ran, or how many bananas I ate, after eating the bowl of ice cream. It mattered that my main diet was ice cream!

If you don't have a strong, good, healthy foundation, it doesn't matter how hard you work. You will not get the results you want.