Applying a numbing cream to the tip can also help prevent premature ejaculation. A numbing cream can help lessen the sensations in the penis to help you last longer. Switching between roles will allow your arousal to go in and out like waves, which will make sex last longer. Instead, be present in the moment, savoring every moment of pleasure. Alcohol affects everybody differently, but overall, drinking too much before sex can dull your sensations and make it harder for you to stay aroused.