Like other standing balance poses in yoga, tree pose will improve your focus while strengthening the muscles in your ankles, calves and thighs. It also stretches the inner thigh and groin muscles on the bent leg.
How to do it: Shift your weight onto your left foot, pressing it firmly onto the floor. Bend the right leg at the knee and place the sole of the right foot on your inner left thigh. Point the toes toward the floor. If this is difficult, you can also place the sole of the foot on the inner calf or ankle (but avoid the knee). Bring your palms together in front of your chest and keep your weight centered over the left foot. Press the left knee back to open the groin while keeping your hips parallel to the front of the room. Release the foot and repeat on the other side.
How to get better: To improve your balance, keep your attention on the floor a few feet in front of you.