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.
Climbing a rope is the most strenuous activity in-game. Rest and Stamina are drained as one climbs. When stamina reaches zero, the climbing rate slows significantly and there is an ever increasing chance to slip and fall. How fast one climbs is significantly impacted by current Rest level.