If Bert goes on vacation and misses regular exercise for three weeks, this should have no effect on him
he should exercise harder to get back in shape he should lower his exercise goals he should perform rehabilitation exercises

Asap during the past few weeks or months, have you noticed any exercises that have become too easy for you? do you think you need to increase the intensity in any of the three exercise areas in your workouts? evaluate your exercise progress in the three exercise areas (cardiovascular, resistance, and flexibility) and list what modifications, if any, you may need to make in your exercise routine.