toughexercise
nounUK /tʌf ˈeksəsaɪz/
US /tʌf ˈeksərsaɪz/
Hard work that makes your body strong.
The coach gave us a tough exercise to build our leg muscles.
OTHER MEANINGS
2. A difficult problem to solve for practice.
The math teacher gave a tough exercise on fractions.
3. A hard thing you must do to get better at something.
Learning all the new words was a tough exercise for the class.
4. A test of your patience or skill.
Waiting quietly in line was a tough exercise for the puppy.