I Did It to Myself Again

I have this tendency
To exercise regularly
For a period of time,
Then something
Invariably comes up,
That has be miss
A week or two,
Which will stretch
Into several months,
Where I do not exercise.
Each time I start up again,
I will suffer
About two weeks worth of
Aches and pains,
While my body readjusts to
The idea of working out.
I know it is critical
For my health and well being
To keep on a regular
Exercise regime,
But that is easier said
Then done,
So now I sit,
Sore all over,
Wondering why
I did that to myself again.