Cynthia, my hubby is in entertainment and he knows that if you don't feel 100% it is hard to disguise. I empathise with Mika on how he must be hating doing his songs because he is so tired. People DO see thru the mask sometimes and if you are a perfactionist wanting to give your best, doing it half mast will not do you any favours.
I enjoyed what I saw, but if he was mine, I'd tuck him up and let him sleep for days.