Correct postural habits are important for good health. When walking, one should stand up straight with their feet pointed slightly outward and take long strides. When sitting, one should lean back in the chair with their legs bent at a 90 degree angle. When driving, one should lean back in their seat with their arms bent slightly and adjust the seat position for proper body posture. Proper posture helps avoid back strain when performing activities like picking objects off the floor, getting up from sitting or lying down, carrying backpacks, and personal hygiene tasks like washing hands and brushing teeth.