be on exercise

I don't seem to remember so much free time on exercise.

I don't spend a lot of time on exercise, maybe four hours a week.

We spend much of our time on exercises for the body, not the face.

Perhaps your blood pressure is too high and swinging further on exercise.

Two of the four issues so far have included articles on exercise.

However, they were believed to be on exercise and not operations.

I just go out on exercises now and again, fill in for somebody.

The age difference might be related to the findings on weight and exercise, she said.

"there were two military jets on exercise in the area at the time."

But the carriers were all out on exercises, we didn't see a one.