I've been riding the SS exclusively for the past 2 weeks. Today, I was just not into it. It was hot (95 deg F, w/ a 100 heat index), I only had 6 hrs sleep, and had a long day. So at the trails I couldn't concentrate, I was falling, sliding, unable to hit some hills, and got really tired. I only road 5 mi. It's just one of those days.