Human Charged with Batteries?

I am flat! so freaking tired. I getting tired easily nowadays. Guess I am getting older and older. Hubby even noticed that I have a few strand of white hairs. Oh my god is the only thing I can blurt out. I am wondering why human do not use batteries? When some one getting tired, he or she can use pull out the old batteries and put in a new recharged one inside. Just imagine, no need to sleep, just place a few makita batteries inside and you will be refresh just like that. Nah, I am thinking too much! LOL how can that be true!?!