Final answer:
Vigorous intensity should be performed for 75 to 150 minutes per week according to the 2018 Physical Activity Guidelines for Americans.
Step-by-step explanation:
Vigorous intensity should be performed for at least 75 minutes to 150 minutes per week according to the 2018 Physical Activity Guidelines for Americans. This can be achieved through activities such as running, swimming, or playing basketball, where you cannot say more than a few words without pausing for a breath. Vigorous intensity exercises provide additional health benefits and can help with weight loss and maintenance.