Cogito ergo sum - I think therefore I row

My sleek light weight bicycle that used to be in tow, 
Now I know that you are wondering,  why did it have to go? 
What happened to my mistress ,  the loss of love affair, 
With my lovely  exercise routine would you ask, oh would you dare? 
The lycra it is staying, though my bum can take no more
Tired of knife edge seating, I've had to show the door,
To the fondest trusty steed cos of soreness of the saddle 
And now I am turning to a thing that used to need a paddle
At least there's double spacing for both cheeks upon the seating
And the purpose is to keep me fit it's not as if I'm cheating 
Its safer for me personally the tarmac hurts if spills
And I won't be clogging roads no more in those Surrey Hills
Hero Bradley Wiggins made move to indoor rowing
I think that it's easy now to see where this is  going
I'll emulate my hero, you know it's to be done
I'll take up indoor rowing too,  Cogito ergo sum!