[talk up here than as usual].
¨ vigorous physical activities refer to activities that take hard physical effort and make you breathe much harder that normal.
1a. during the last 7 days, on how many days did you do vigorous physical activities like heavy lifting, digging, aerobics, or fast bicycling,?
think about only those physical activities that you did for at least 10 minutes at a time.
1b. how much time in total did you usually spend on one of those days doing vigorous physical activities?
2a. again, think only about those physical activities that you did for at least 10 minutes at a time. during the last 7 days, on how many days did 