In yoga, Warrior I is often encountered during the Sun Salutation sequence. In addition to improving your balance, this pose stretches and strengthens the ankles, calves and thighs. It also stretches the chest, lungs, shoulders and groin.
How to do it: From mountain pose, step your right foot forward and lift your arms overhead. Turn your left foot 45 to 60 degrees to the left. Bend your right knee until it is over the ankle. Bring the hips parallel to the front of the room. Arch your upper back slightly, lifting your chest up toward the ceiling. Press your palms together, if possible, or keep your hands shoulder width apart with your palms facing each other. Look forward or up at your thumbs. When done, step the right foot back into mountain pose. Repeat on the other side.
How to get better: The most challenging part of this pose is lining up the front heel with the arch of the back foot. If you feel unbalanced, widen your stance.