Infants experience rapid growth in their first year, doubling their weight by about 5-6 months and tripling by their first birthday. They also grow about 10 inches in length during this time.

Key physical milestones include rolling over, sitting up without support, beginning to crawl, standing with assistance, and possibly taking their first steps. Remember, all babies develop at their own pace.

Delayed milestones, such as difficulty rolling over, sitting, standing, walking, or unusual muscle tone, can be signs of developmental delays. It's important to discuss these observations with your pediatrician.

If you have concerns about your baby's development, it's important to talk to your healthcare provider. They can evaluate your baby's progress and offer guidance or intervention if needed.