Between a studio loaner mat that squeaks every time you rearrange your body and a glossary of new words from the instructor, your first yoga class can be pretty intimidating. Instead of giving up yoga altogether — after all, it’s a great workout that strengthens and builds muscle while increasing flexibility — try investing in an affordable yoga kit to set yourself up for success ahead of your next session. While you’ll find plenty of options on Amazon, the Sivan Health and Fitness Yoga Set is easily the marketplace’s most popular pick. The six-piece set has more than 1,200 perfect five-star reviews from both beginner and experienced yogis declaring it’s “worth so much more than it costs” and “has everything you need” to master the basics.  The star of the set is the ultra thick yoga mat: It’s made with a specially designed memory foam that’s four times thicker than your standard yoga mat. While the additional cushioning feels great during savasana — that’s when you lie on your back — it also makes your entire practice much easier on your joints, including achy knees and fragile wrists. In fact, the difference was so apparent to one reviewer that they almost cried tears of happi...