The word "activity" refers to any action or task that someone does. It can be something physical, like running or playing, or something mental, like reading or thinking. It is something that requires effort or movement. Full definition
What is the optimal level of activity in one day or one week? (challengesuccess.org)
In case you are looking for ideas for activities for preschool, you should know that it is important for children to know about animals. (newbornbabyzone.com)
Although the findings aren't surprising, most research on exercise and weight has looked at the impact of physical activity on weight loss, not weight - gain prevention. (health.com)