There's a huge problem with working out that has yet to be solved: when, precisely, do our workout clothes become too worn to wear anymore? Apple knows we can't be wasting endless minutes looking for holes and tears in our shirts and pants, so it's just obtained a method patent to let you know when your gear is past its prime. The patent claims sensor-equipped garments that can track how you use them, report that info back to a central database and alert you when the clothing has reached "its expected useful lifetime." (Read: it's time to buy some new, undoubtedly more expensive gym clothes