AM and PM are associated with 12-hour timekeeping, as opposed to the international 24-hour clock. The 12-hour system grew up mainly in Northern Europe, and spread globally from there via the British Empire.
The adjective STRENUOUS has 2 senses: 1. characterized by or performed with much energy or force. 2. taxing to the utmost; testing powers of endurance. Familiarity information: STRENUOUS used as an adjective is rare.
There is no definitive answer to this question and the right amount of exercise will vary from person to person. The Department of Health recommends 150 minutes of moderately strenuous physical activity per week. This equates to 30 minutes of activity per day, for at least five days a week.This can be broken up into shorter sessions throughout the day, with each session lasting a minimum of 10 minutes.For example, it could be a 15-minute walk to the local shops, and then housework or gardening tasks in the afternoon.his equates to 30 minutes of activity per day, for at least five days a week. This can be broken up into shorter sessions throughout the day, with each session lasting a minimum of 10 minutes.