Is it possible for a person to take both the LSAT and the MCAT?
I am sure it is possible but it sounds really painful just thinking about it. The question suggests that you are not really decided on what you would like to do. Instead of making a decision of what to do based on how well you perform on the tests, I suggest deciding which field you are really more drawn to. If that's a tie, then ask yourself what you hope to gain by your profession. Is it helping people? Feeling like you make a difference? Feeling powerful? What is the emotional payoff that you expect? What do you expect from the surroundings you will work in? Do you plan to have a family? which profession would fit best with that? Don't pick a professional just because it seems respectable or respected in society. If you are truly not excited about the work, do not waste your time. You will be miserable. Also, lately law schools have been downsizing due to declining demand for lawyers. Good luck.
Absolutely. Many students like to keep their options open. Whether you are actually interested in both areas, or you just want to see how you do, there is nothing prohibiting you from sitting for both exams. I would encourage you and all students to take a prep course so you can do your very best. Good luck.