I don't know how you do it.
Today I chose a "hillier" trail (still really flat, believe me) to work on my fitness and shifting (only my second ever ride on a road bike). I've only been cycling three weeks and am pathetically out of shape. Was on bed rest this fall and then put on meds that packed 35 lbs on me in about 4 months. I'm a train wreck.
Managed to do the inclines (can't call them proper hills) but was so tired and zapped afterwards. I hope someday I'm in half as good shape as you.
Encouraging to hear you lost weight though
2008 Giant FCR2 W
2001 Giant Rincon SE