Premature ejaculation may result from conditions such as diabetes, thyroid dysfunction, hormonal imbalances, nutritional deficiencies, stress, or inadequate sleep. Shin pain during sexual activity can arise from muscle strain, nerve irritation, or improper positioning. Management involves a balanced diet rich in proteins, iron, and healthy fats, adequate sleep, stress reduction, avoiding smoking, alcohol, and excessive caffeine, and performing gentle leg stretches or physiotherapy for shin discomfort. Consultation with a urologist or sexual health specialist is recommended for appropriate treatment and evaluation of any underlying medical conditions.