YMCA Cycling

My arms and shoulders are pretty sore from Strength Training yesterday but my legs felt fine so I went to Cycling.  And I made it all the way through class today!  Though I couldn't really follow the instructors directions.  She's pretty tough.  She wanted us to do 90 RPMs at gear 16.  That's a bit much for me.  I'm usually two gears below what the instructor calls.