Stand with your feet shoulder distance apart, weight on the back foot, give your knee a little bend and you have an instant waistline! (style-yourself-confident.com)
So, to begin the two handed swing, you should place your feet shoulder distance. (planetsupplement.com)
If you're going to be practicing on your palms, set up your hands shoulder distance apart and align the wrists under the shoulders. (mindbodygreen.com)