One of my hobbies is training in Martial Arts. Specifically, an Israeli system called Krav Maga.
It is a realistic system of combat developed for the Israeli military that parts of which are now being taught to civilians. The core of Krav Maga is instilling muscle memory so that students and quickly learn and develop skills necessary to survive a violent encounter.
The main way this is achieved is through what is known as Stress Training. Stress training is usually done by bringing a person close to physical exhaustion and then having them perform techniques and combative strikes repeatedly. This simulates the stress felt during an attack and helps not only to install muscle memory, but lessens the chances of freezing up during such an attack.
In Christian apologetics, such training is also needed. It’s one thing to study the arguments for Christianity, but it is another to be able to answer questions when the heat is on and you are being pressed by a non-Christian for answers. This can be achieved through role play with others studying apologetical arguments. The internet is a good source of arguments against Christianity, so people can take on the role of atheist, LDS, Jehovah’s Witness, etc. and present those arguments and questions while you practice fielding and answering those questions.
Training is essential in learning to present an argument under pressure. Without training, we may find ourselves left flat-footed when we are presented with questions. If I simply watched my Krav Maga instructor perform the techniques or simply practiced them slowly without any pressure or resistance from my training partner, then I may not perform as well under pressure or be able to think on my feet. If I study apologetics by reading books, articles, the Bible or watching debates or my favorite apologists answer questions, I may find it difficult to respond when I feel nervous or even afraid when confronted with a difficult question or a hostile questioner.
In his book, Tactics, A Gameplan For Discussing Your Christian Convictions , Greg Koukl recommends a 3 step process in between engagements to help better prepare for each encounter:
1. Anticipate - think about what type of questions or arguments may be given and the responses that may come to your answers.
2. Reflect - Reflect on the encounter and think about how you may have answered differently or is there something you should bone up on to give a better answer in the future.
3. Practice - Get a friend to role play with you and practice giving answers that are seasoned with salt and that convey the type of Christian character we are commissioned to give.
The old saying “The more you sweat in practice, the less you bleed in battle” rings true. So get together with your training partners and sweat it out answering objections and questions so that you will be better prepared when the moment arrives.
 Koukl, Gregory. (2009). Tactics, A Gameplan For Discussing Your Christian Convictions. Grand Rapids, MI: Zondervan.