Where does your biggest source of energy come from?
Your ruling planet of Mars is one of those heavenly bodies that brings a ton of energy to you! You may have a to-do list a mile long, only to accomplish everything, arrive home, then go back out for a 5-mile run. Aries needs to burn off calories, but also to deal with the stress their daily lives bring.
The best way for your sign to do this is through physical exercise - running, hiking, swimming or something else. If you're not exerting yourself on a regular basis, you could find difficulty sleeping at night because your mind keeps working.
Not the athletic type? (Really??) Mental stimulation can be just as invigorating - but that doesn't mean TV or tablets. How about reading a book, or better yet, create something on your own? Gardening, perhaps?