Ask yourself why you want to last longer during sex. Are you finishing before you’re ready? Is your partner asking you to last longer so that they can experience more pleasure? If you have a penis and want to last longer, you can try edging, a practice that allows you to strengthen your ejaculatory control. I’d also recommend experimenting with Kegels (they aren’t just for vulvas), which can help you strengthen your pelvic floor and define the ejaculatory muscles. Another method is simply to try masturbating a few hours before having sex. In some cases, your penis is just so psyched to be having sex that it wants to release ASAP. 

Here are some of my tips for lasting longer in bed:
Read – Ask Emily: How Can I Last Longer in Bed
Read – 4 Tips for Lasting Longer in Bed
Read – 4 Ways to Close the Orgasm Gap
Listen – Make Sex Last Longer
Listen – Coming Together with Jeff Abraham