You could always ride harder or go up a hill, in a similar way to running up one, actually.:Yeh no offence to anyone, just don't get the cycling thingy - or more accurately I'm not prepared, or can afford, to spend $8000 on a bike and kit. I did a 2.5hr intense ride on my mountain bike once, so I understand why going for a lighter bike is better, because it was like driving a car through quicksand - you can peddle as hard as you want, but you don't get anywhere!
The other thing with riding I find is that you have to ride for hours before you get tired. Whereas I can smash out some sprints on hills for 20minutes and be dead. Yeh I'm more of a running type...
And you can buy a used, light, good quality road bike for little over $1000.
But I suspect you'd just prefer to keep posting how you don't get it...