Thanks to the rise of athleisure, sneakers have become a staple, if not a requirement, of on-trend streetwear. Of course, most of these kicks are simpler in design than what you'd want to wear during a workout, which makes them a bit easier to shop for. It's your trainers — the shoes you trust for your daily run or your post-work trip to the gym — that are more difficult to choose. Our friends at Well Well Well cite a few important questions you should ask yourself as you begin your search for the perfect workout shoe. Start simple: Narrow down your options based on what kind of workout you're planning to do. Different athletes have different needs, and you don't want to waste time looking at shoes designed for sprints if you're interested in trail running. The company's infographic (below) shows what makes different sneakers right for different workouts. Another thing to keep in mind is the time of day you go sneaker shopping. Studies show that your feet swell throughout the day. So, trying on sneakers in the morning might not give you the best idea of how they'll fit, especially if you tend to work out in the evening. To buy sneakers that work best for your foot size, get measured around or after 4 p.m. Check out more fun sneaker facts below.