A cruise can be strenuous.Logical formLearned from1 sentences. A counter-effort can be strenuous.Logical formLearned from1 sentences. (Caloric restriction diets) can be strenuous.Logical formLearned from1 sentences. An instruction can be strenuous.Logical formLearned from1 sentences. Gorillas can be strenuous.Logical formLearned from1 sentences. Timelines can be strenuous.Logical formLearned from1 sentences. An (off-season weight training program) can be strenuous.Logical formLearned from1 sentences. Some jobs can be strenuous.Logical formLearned from1 sentences. A (training exercise) can be strenuous.Logical formLearned from1 sentences. A (working schedule) can be strenuous.Logical formLearned from1 sentences. A social-climbing can be strenuous.Logical formLearned from1 sentences. A prank can be strenuous.Logical formLearned from1 sentences. A quarter-century can be strenuous.Logical formLearned from1 sentences. A (dance number) can be strenuous.Logical formLearned from1 sentences. Defenses can be strenuous.Logical formLearned from1 sentences.