When it comes to expressing the idea of thinking deeply or working hard on something, there are a few antonyms for the phrase "beats one's brains." One opposite phrase is "switches off," which means to stop thinking or lose focus. Another antonym is "takes it easy," meaning to relax and not overthink or stress about something. One more antonym for beats one's brains is "lets it go," which suggests letting things happen naturally and not trying too hard to force an outcome. Ultimately, whether we are beating our brains or taking it easy, finding the right balance of effort and relaxation can help us achieve our goals and maintain a healthy mindset.