I wish I can be sick......at least i can give myself a break then

Didn't really eat much these few days....It is really a choice between food and sleep. Whenever I don't have enough sleep,I really don't have appetite to eat. Maybe you think that eating doesn't cost me that much time, but I need to spend time on cooking. I know very well that as long as I still have energy to do my work, I will keep doing unless I get sick.I really want to give myself a break.....but what can I do?Letting go is really not that easy especially when my target is to get to the top.