Not setting a goal to reach or a challenge to achieve is a common mistake people who start to work out are doing. Without a plan for your workout, you will feel discouraged after a short time, and then you will give up doing workouts.
Warming up before a workout helps to activate your central nervous system and to maximize your performance. The improvement in blood and oxygen circulation and the increase in body temperature helps to prepare the muscles for more strenuous activities.
You're Hades! You're ambitious, quick-witted and self-confident! As the god of your own private underworld you know that if everyone just did what you asked of them the world would be a much better place to live in!