Yoga mat: Most yoga mats can go right into the washing machine on the gentle cycle. (If in doubt, check with the manufacturer first.) Once a month, toss in your mat and use mild detergent and cold water. But to maintain the tacky finish, remove the mat before the spin cycle starts, roll it up in a towel to absorb some moisture, and hang it over the shower rod to dry fully. For a quick refresher after each class, swipe with a Josha yoga-mat wipe ($13 for 50, amazon.com). Give the mat a minute to dry, then roll it up.