how to log this is it exercise?

Hi, I am resting today as feel a bit coldy so have not gone to the gym and I am singing tonight with my band.. normally we gig every week and I am up singing lead vocals and jumping around like a lunatic. I always feel like I've run a marathon after each gig so I suppose I should record it as excercise, it's damn hard work! Any ideas how I should record it in the exercise log? thanks very much!