It is really important for you, to keepyourself healthy and your body flexible. Yoga from olden time is proved as agood way to keep you fit. Doing some simple asana on regular basis can fulfillyour this demand. 

Here are three basic and important asana to perform which will keep you fit.

Naukasana/Navasana or Boat Pose

Keep your legs straight out in front of you while sitting on ground. Bend your knees and lean back slightly while keeping your spine upright and your hands resting beside your hips. Inhale now and raise both legs while stretching your arms forward. Maintain a long spine by keeping your toes at eye level. Hold the pose for 5–10 seconds before releasing it.Yoga's Naukasana, or boat pose, not only relieves tension, but it can also help you overcome a variety of physical ailments. It helps to strengthen the core and hip flexors, as well as strengthen and improve flexibility in the hip joints and legs. It also stimulates abdominal organs and promotes digestion, all while increasing body balance.

Virabhadrasana I or the Warrior Pose I

Stand tall with your legs at 4 to 5 feet apart. The angle of your right foot should be at a 90-degree with the toes pointing out, while your left foot should be at a 45-degree angle. Bring your hands to shoulder level, parallel to the ground, and palms facing upwards.Exhale and glance towards your right hand while bending your right leg. Maintain a straight line between your knee and ankle, keeping your hips square and your right thigh parallel to the ground. Stretch your arms to join your palms above your head and look in their direction as you enter the posture, gently pulling your pelvis down. Breathe normally, and then hold the stance for 10 to 15 seconds before slowly lowering your hands from the sides. Virabhadrasana Warrior Pose I energizes fatigued limbs and opens up your chest and lungs, as well as stretching your hips, groynes, and shoulders and increasing balance and stability.

Vrikshasana or Tree Pose

Balance on one leg, with the other folded and supported on the inside of your thigh. Extend your hands over your head and point them straight up.In the anjali mudra, clasp them together. Focus on the distance, shift your weight to your left leg while keeping your right knee bent in a half lotus position, and hold for a few seconds before releasing and repeating with the other leg.This asana helps to bring your mind and body into harmony.The entire body's weight is shifted to each leg, which strengthens the ligaments and tendons in the foot. It also aids in the strengthening of the thighs, calves, and ankles, as well as improving attention.