I think a lot of us are type A, we can't sit still but also know our brains need to recoup and do something else. I tried to write some code but honestly I'd rather finish my ethernet project. Life is a marathon not a sprint. You gotta recharge sometimes and honestly you may learn something different that shapes how you think. Steve Jobs always said Calligraphy was the reason he thought about fonts on a GUI. Why the hell was he taking that class instead of hustling? :-p
It's completely wise. We aren't designed to just do one thing over and over. Life is so much more than building a SaaS or making money. You know we could go tomorrow right? Anything could happen and the future isn't guaranteed. Obviously, stay motivated and keep driving but sometimes you gotta replenish your gas tank and take care of your physical/mental health.