struggling

Why can't I make it through my next level of jogging??? This is making me crazy! The first shot my lungs held my down, yesterday it was my calves! I got through half of the workout, and my calves started aching so badly that I could barely walk. I stopped twice to stretch, which allowed me to continue jogging a little bit, but I wasn't able to complete my goal. Grrrr!!!

Today is walk Yanna/yoga day, and I guess I give it another shot tomorrow.