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Make sure your shorts or pants have a lot of stretch in them to be able to move with your body. Yoga pants, exercise shorts, sweatpants, and gymnastic leotards are great options. If you don't own any of these, you can use normal leggings. Find a clear space on the floor to lay out your mat to begin. If you are on a carpeted floor, a mat may not be necessary. Staying hydrated is important for any type of physical activity. Dehydration can also cause muscle fatigue and reduce your ability to stretch your muscles to their full capacity.

Summary:
Dress yourself in comfortable, flexible clothing. Get an exercise or yoga mat, yoga blocks, and a bolster to use, or any suitable alternative(s). Fill up a water bottle to keep close.