I'm jumping back into my training and the push-ups are killing me, even when I use my nifty "push up pump" that helps me keep my body in the correct form. I have been very preoccupied with work. I have to give two lectures at the Heart Rhythm Society's annual International convention this May and I'm scared out of my mind. I am extremely nervous. You would think after 20 years as an Electrophysiology nurse I would be a little more confident.