I also agree with because enough sleep or rest allow you body to heal or refresh. Having good rest is really importance to our body and mind.100% agree with this! I find that when I'm not getting enough sleep, that's when my body tries to find energy in other sources - and that used to be food! If I was tired I'd just be looking for a chocolate bar, or the most sugary things to give me that fake energy rush. So much easier to just get enough rest!