First, if you need to grasp the soles of your feet and toes with your hands, but your current flexibility is not enough, then don't compromise your back in order to grasp your feet, use a belt, such as back flexion and extension, standing with one leg extended, dancing king style, and some postures need to shake hands with both hands, such as cow face style. You can also open your shoulders with a yoga belt, hold the yoga belt with both hands and straighten it twice as wide as your shoulders, and rotate it back and forth on your head. Second, to make sure. Will be tied with yoga belts, such as shoulder handstand and camel pose. About wii fit, I want to say that it is a game, a gym pedal, sweating and muscle aches, but this is not yoga, and you lose your breath and attention in yoga.