The nature of the task requires cooperative activity of a high order at various levels and between a wide range of people.

Such automated or unconscious actions require less activity in the brain, and exercise it less.

Some online games can be played using a variety of peripheral input devices that require physical activity.

As a Vulcan, he did not require pointless activity to keep his mind free of anxiety.

Even slow flight for an insect that big, however, requires much muscular activity, which creates heat.

For plants to be considered to be ornamental, they may require specific work and activity by a gardener.

It just requires a little time and activity from the old grey matter.

As a working mother with a long commute, my day of rest required maniacal activity, especially in the winter months, when the sun sets early.

Moreover, defence of rights may indeed require activity in the form of very vigorous protest.

While he rests, I perform any duties he may have which do not require physical activity.