Pain and embarrassment, but a minor gain

Today was the first day this month.  I did some serious exercising...for me at least.  I worked 15 minutes on the treadmill at 2.5 mph.  I also worked 3 more minutes on the treadmill at 1.0% grade at 3.0 mph, or at least I tried.  I also tried to work 2 minutes on the treadmill.  It was embarrassing to say the least.  I didn't feel too embarrassing but looking back, I wonder how do I not know how to use a stationary bike?  Needless to say, I have not used a stationary bike in years, but I got it to work somehow, lol.  I also burned some calories in the long run.