prolonged activity
noun phraseUK /prəˈlɒŋd ækˈtɪvəti/
US /prəˈlɔːŋd ækˈtɪvəti/
Doing something for a very long time without stopping.
The doctor said prolonged activity in the sun can make you tired.
OTHER MEANINGS
2. Exercise that goes on for a long time, like a long run or swim.
Prolonged activity can build strong muscles but needs rest too.
3. Work or play that continues for many hours without a break.
Prolonged activity at the computer made his eyes sore.
4. A period of being busy for a long stretch of time.
After prolonged activity at school, she was ready for a nap.