Yes， it is quite normal for a 1-year-old baby to start sweating when they feel hot or are engaged in physical activities. Sweating is the natural way of regulating body temperature， and babies are not an exception to this rule. In fact， they may sweat more easily than adults， as they have a greater surface area relative to their body weight， which means that they lose heat more quickly.
Sweating is the process by which the body releases heat through the pores in the skin. When the body's temperature rises， the brain sends a signal to the sweat glands to produce sweat. As the sweat evaporates from the skin， it carries away heat and cools the body down. This process is especially important for babies， as they are not able to regulate their body temperature as efficiently as adults.
However， excessive sweating in babies can sometimes be a sign of an underlying health condition. If your baby is sweating excessively or seems to be sweating more than usual， especially at night or in cool temperatures， you should speak with your pediatrician to rule out any underlying issues.
In conclusion， sweating is a normal and healthy response to heat or physical activity in a 1-year-old baby. However， if you are concerned about your baby's sweating or they seem to be sweating excessively， it's always best to consult with your pediatrician to ensure their health and wellness.
