Worried

Today's commute was a little bit worrying. I cycled to a friend's home in Ang Mo Kio and was feeling tired before I even reached AMK MRT! Could feel the burn in my legs and tightness in my chest as I pedalled and used a really easy gearing to prevent over-straining myself.
My bike handling skills have also deteriorated.

I've also not been able to commute to school due to being down with dengue fever.

This is worrying.