The surge in feel-good hormones also promotes a more relaxed and calm state of being, making it easier to achieve restful sleep, which is a critical part of maintaining a high-functioning immune system.⁠ ⁠ Just as bad habits can slow your immune system, positive habits (such as a healthy sleep schedule and an active intercourse life) can help boost your immune system, which can prevent you from becoming sick.⁠ ⁠ ⁠ ⁠ ⁠ #feelgood #hormones #dopamine #serotonin #oxytocin #cortisollevels #immunesystem #science #biology