1.   After the operation, you should avoid strenuous exercise.

2.   But this Strategy could easily backfire, since strenuous exercise would Simply produce more lactic acid, making the situation worse.

3.   Do not start a programme of strenuous exercise if you have any heart problems.

4.   Pregnant women should avoid strenuous exercise.

5.   Regular light exercise is safer and more effective than occasional bouts of strenuous exercise.

6.   The attrition rate was horrible, especially on the days that Nabers ordered strenuous exercise drills.

7.   The doctor advised Ken to avoid strenuous exercise.

8.   The strenuous exercise undergone could balance out the increased calories.

9.   Do not undertake strenuous exercise for a few hours after a meal to allow food to digest.

10.   Avoid strenuous exercise in the evening.