<p>Of course it’s fine to take (a large majority of) one day off every week. For me that’s Friday. I usually finish up some homework that’s due on 5, head home and relax for the rest of the day. I myself am taking one of the hardest courseloads I’ve ever taken and working the hardest I’ve ever had to in my entire life but I still take a day or two off every now and then. In fact last week was my hell week (classical mechanics, linear algebra and e&m midterms, 2 homeworks for classical and quantum) and I pretty much took the whole weekend off. Looking forward to getting back to studying tomorrow :P</p>