There hasn’t been a direct link drawn to show that exercise can help with premature ejaculations. But exercise can help to reduce stress, and stress can sometimes be a factor in premature ejaculation.
Unfortunately, though, exercise is very unlikely to be too effective in helping with type 1 (lifelong) premature ejaculation. So if this is something you’ve always suffered with, you’ll be better off getting in touch with a clinician to come up with a more robust plan that will be more effective.