It is possible to ruck everyday, though it's not ideal. In fact, one study recommended soldiers perform only one heavy load carriage task every 10–14 days (8). If you do choose to ruck more often you should work up to it over time. For most people, it's recommended you limit rucking to 1–2 times a week, because of the muscular demands on the lower body and shoulders, and the change in biomechanics when you carry a load on your back. Repeating the same exercise every day can lead to overtraining and injury.