"demand effort" is a correct and usable phrase in written English.
It means to strongly require or expect someone to make an effort or put in work towards something. An example of how to use this phrase in a sentence could be: "The challenging project demanded a significant amount of effort from the team, but their hard work paid off in the end."
Of course, it does demand effort; Ms. Tharp's choreography is fiendish.
I recognise that the road to style isn't always easy, but things that demand effort that are worth doing.
He may demand effort from the reader, but, as always with this poet, the dividends are commensurate.
The greatest leaders, like Franklin D. Roosevelt, Abraham Lincoln and the Rev. Dr. Martin Luther King Jr., deal transparently and, above all, truthfully with their followers, giving reasons for their policies in "fireside chats," published messages to Congress and public speeches — particularly when the policies demand effort and sacrifice.
To shape its sounds well would demand effort, practice, artistry – and an individual human touch.
It motivates people, especially in tasks that demand effort and no skill.
Amid the rush to train enough MBCT teachers to meet rising demand, efforts are being made to avoid any decline in quality of practice.
To meet increasing water demand, efforts have been focused on supply side solutions by building hydrological infrastructures for water resources collecting, storage and distribution.
To balance supply and demand, efforts are being made in various technological fields to improve the storage of electricity, either directly or by way of converting electricity into energy carriers that are easier to store.
They also urge viewers to call Congress and demand efforts toward consensus.
Executives at Sony's Moviefly, an Internet movies-on-demand effort that will provide the technical backbone for the venture, had been saying since early this year that they intended to go online as soon as they could.
