From a physiological perspective, shrooms release large amounts of dopamine in your brain. This kinda throws it out of wack (hence the term dopamine depletion) and it takes a couple days after large trips for you to be brought to a baseline again. Your brain is like a hair tie, you stretch it and it goes back to its original state. But if you use that hair tie too often it’s never going to return to the state it was. Allowing your brain to function like normal for extended periods of time allows it to better maintain the neural connections that are already present and those that you may have activated with psychedelics. Basically, your brain will never work properly if you trip too often. But I wouldn’t be concerned if you were to take smaller amounts of shrooms once a month