Thanks girls. I'm in the 130's... so that's what I mean by big! haha

I'm actually doing a 1km time trial run and a full on bootcamp type PT session before the spin and pump classes. Going to wreck myself good and proper before I go to a concert that night.

I've been doing 12km walk/runs lately so I think stamina wise I should be ok... I'm just not too sure how I'll go on a bike.