To become a Navy SEAL, you must first pass the physical screening test, or PST. It’s designed to “test your overall physical readiness,” according to the Navy SEALs website, and consists of a swim, push-ups, sit-ups, pull-ups, and a 1.5-mile run. The PST is a requirement for those who want to enter BUD/S, which stands for Basic Underwater Demolition/SEAL. Those undergoing BUD/S preparation and training have to take a test more rigorous than the PST, but everyone has to pass the PST to get there. “It pays to be a winner,” runs the organization’s motto. Once, a trainee hopeful almost drowned. We…