The T-shirt also has a tight fit that will keep you8 to frame your curves, and it is also machine-washable and dryable. 2. Made from a light, air-thick fabric, they offer a slimming effect and help to reduce your resting heart rate, improving your overall workout routine. One of the biggest reasons is the trend of people wanting to express their individuality and add some personality to their clothing. The popularity of lululemon Athletica brand sweatpants has led to many people trying to patterns their own sweaty messes all over their amazing pieces. And while their leggings are generally considered to be highquality, they are definitely pricier than some of the other options on this list.