I'm guilty of serial SCR'ing. I'm not the fastest, and most people aren't racing, but it is fun, and breaks up my commute. Unfortunately, it means I end up cream crackered by the end of the week because I'm constantly leaving the house telling myself "this is a recovery ride, take it easy", but the moment I see a rider in the distance it's like a red rag! I'm old enough to know better, but I just can't help myself.