Individual differences in penis size and firmness are common, and many men worry about them even when they fall within the typical range. Erections can be improved by leading a healthy lifestyle, exercising frequently, getting enough sleep, quitting smoking or drinking excessively, controlling stress, and treating diseases like diabetes or obesity. Online advertisements for unproven oils, pills, or enlargement products should be avoided since they are frequently dangerous and ineffective. For appropriate guidance and assurance, it is preferable to see a urologist or sexual health physician if you struggle to achieve or sustain an erection, have low sexual confidence, or worry that your size will negatively impact your relationship.