Yoga consists of myriads of poses, or asanas. One popular pose is the warrior-themed yoga post known as the Virabhadrasana series, or more commonly the Warrior Poses. It is an attempt to connect yoga to the warrior mindset.

Warrior I (Virabhadrasana I)

This pose symbolizes the moment of arrival in battle. The practitioner stands with one foot forward, arms raised, mimicking a warrior stepping onto the battlefield, ready to face any adversary with courage and determination. It teaches balance and alignment, much like a warrior must maintain composure under pressure. This powerful yoga pose strengthens the legs, ankles, and back while stretching the entire front side of the body.

1. Stand up straight in mountain pose (tadasana) with your feet hip-distance apart and your arms by the sides of your body.  Breathe deeply and evenly, calming your mind and bringing it to the present moment. Draw your awareness inward.
2. Separate your legs wide apart at a distance of at least three to four feet.
3. Turn your right foot out at 90 degrees and your left foot in at 15 degrees, or keep it straight with toes pointing forward.
4. Align the heel of your right foot with the center of your left foot.
5. Turn your upper body to the right.
6. Breathe in and reach your arms up, keeping your hands shoulder-distance apart and your palms facing each other. Allow your shoulder blades to open out and up slightly. Keep your gaze forward. You may bring your palms together and look up at your thumbs.
7. Exhale, and with your arms raised, bend your right knee and bring your right thigh parallel to the floor, feeling the stretch in your thigh and hip.
8. Keep your right knee above your right ankle. Make sure that the knee does not extend out beyond the ankle. Keep the back foot grounded and the back leg straight without bending at the left knee.
9. Stay in the pose for about five to ten breaths. If you like, you can extend your spine slightly backward like in a crescent moon. Breathe evenly.
10. Breathing in, straighten your right knee.  Breathing out, bring your arms down.
11. Repeat the pose on the other side.

Warrior II (Virabhadrasana II)

This pose reflects the calm readiness before a confrontation, emphasizing endurance and the ability to hold one’s ground. The extended arms symbolize a warrior’s readiness to engage in combat or to protect. This powerful yoga pose builds strength, improves balance, and opens the hips and chest.

1. Repeat steps 1-4 from warrior one pose as listed above.
2. Breathing in, lift both arms parallel to the ground at shoulder height with your palms facing upwards.
3. Turn your head to the right, and gaze at the tip of your right middle finger.
4. Breathing out, bend your right knee and bring your right thigh parallel to the floor, keeping your upper body straight. Hold the pose with the determination of a fierce warrior. Invoke the valor and courage within. Be a yoga warrior that is ready to face the challenges of your life fearlessly, with grace and poise.
5. Breathing in, extend your right leg and come up.
6. Breathing out, lower your hands to your sides.
7. Repeat the posture on the other side.

Warrior III (Virabhadrasana III)

This pose represents the warrior in motion, either attacking or retreating, highlighting the need for core strength, focus, and the ability to adapt swiftly. It requires balance on one leg, with the body forming a straight line, parallel to the floor.

1. Stand in tadasana(mountain pose). Step your left foot about two feet behind you. Balance the weight evenly between both feet.
2. Inhaling, bring your palms together over your head and interlock your fingers.  Release your index fingers so they point upward.
3. Breathing out, keep your right foot grounded and firm, and shift all your weight onto your right leg.  Lift the left leg up behind you, and stretch your arms and upper body forward, bringing them parallel to the ground.  Hold the pose and breathe evenly.
4. Stretch your arms toward the front wall and your left leg toward the back wall. Make a gentle effort to keep your hips aligned on one plane.
5. Hold the posture for a few breaths.
6. To release, breathe in and slowly lower the left leg to the floor while bringing your torso up.  Exhale, and relax your arms to the sides.
7. Repeat on the other side.

Source:

Warrior Pose: Gain Hip Flexibility and Inner Strength Now