Final answer:
The Department of Health and Human Services recommends adults engage in muscle-strengthening activities on two or more days per week, involving all major muscle groups. While a specific minimum time for each session is not detailed, a regular commitment to strength training rather than a focus on minutes is encouraged.
Step-by-step explanation:
Recommended Duration for Strength Training
The question you've asked pertains to the minimum amount of time one should spend on strength training exercises per week. According to the 2018 Physical Activity Guidelines for Americans issued by the Department of Health and Human Services (HHS), adults should engage in muscle-strengthening activities on two or more days a week. While the guidelines do not specify a minimum number of minutes for each muscle-strengthening session, they recommend that these activities involve all major muscle groups and be of at least moderate intensity. Common strength exercises include push-ups, sit-ups, squats, and lifting weights.
Considering the guidelines and the fact that muscle-strengthening should be done on at least two days per week, a minimum cumulative total of 60 minutes could be inferred when sessions are distributed throughout the week. However, this is not explicitly stated in the HHS guidelines, so it’s best to focus on the regular engagement in muscle-strengthening activities rather than exact minutes.