The Physical Activity Guidelines for Americans suggest that people who need to lose weight or maintain weight loss need to perform minutes per week of moderate-intensity physical activity.

150

Explanation:The physical activity guild is maintained by the United States of America Department of Health and human services of the centre for Disease control.

The guidelines are prepared based on current scientific evidence from researches supporting the connections and relationship between physical activity or exercise, overall health and well-being, disease prevention and quality of life.

This guidelines helps to ensure that United States of America citizens embark on a minimum of 150minutes per week of moderate-intensity physical activity or 75minutes per week vigorous aerobic exercise per week to stay healthy and maintain good body weight.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.