First, if you need to grasp the soles of your feet and toes with your hands, but your flexibility is not enough at present, then don't compromise your back in order to grasp your feet. Use a belt, such as dorsiflexion stretching, standing on one leg stretching, dancing king style, and some postures need to hold 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 turn it back and forth on your head.
Secondly, in order to ensure that the arms and legs are not too far apart, they will be tied with yoga belts, such as shoulder handstand and camel pose.
About wii
Fitness, I want to say, is a game, a gym pedal, sweating and muscle aches, but this is not yoga, you lose your breath and attention in yoga.