President Lincolns oath of office required him to defend and preserve the union
a combination of specific etiologic factors is the answer.
Need to see the statements lol
Answer: Aerobic Heart Rate Zone
This is the zone to aim for when training for endurance. It spurs your body to improve your circulatory system by building new blood vessels and increases your heart and lung capacity. Aiming for 20 to 60 minutes in this zone is believed to give the best fitness training benefits.
