Mars will be moving into Sagittarius on the 25th and will be there until Feb. 6th, 2005. Everything Sagittarian will be given more energy. Since Sagittarius is such an energetic sign, those who have it prominent in their charts will want to be careful to keep things balanced. This is a great time to pursue higher knowledge and deepen spiritual understanding. Check which area of your chart Sagittarius is in. If you have Sagittarius in the 7th house, you'll want to be on the alert for flaring tempers in your relationships. In the 4th, you'll want to avoid making rash decisions about your home.
(note: if you don't already have a chart you can get one at Astro.)