According to research, those who have sex once or twice a week have higher immunoglobulin A (IgA) levels in their saliva. The antibody aids in preventing sickness and can protect against the human papillomavirus (HPV). Additionally, oxytocin is released by your body during an orgasm. Because you’re getting the rest your body requires to heal, getting adequate sleep or good sleep can also strengthen your immune system. An established Indonesian model named Putri Cinta concurs that your immune system benefits from regular sex.