Jeet Kune Do is not a martial arts style. It is more of a philosophy and methodology for studying martial arts. You can think of it as a personalized way of fighting. JKD should be defined as what works for your body type, attributes, etc. The Jeet Kune Do that Bruce Lee developed contained elements of Wing Chun, along with boxing, fencing, and other martial arts. He used all of these to create a unique approach to combat.

Trapping range is a key aspect of the original JKD. Trapping involves fighting in close quarters. Trapping does include brutal, practical self defense techniques like head-butts, knees, elbows, and eye-gouges. This range is unfamiliar to many other styles of martial arts. For example in Judo all fighting is done at extremely close range/

Trapping can be a game-changer for you in a self-defense situation. Trapping techniques allows you to quickly take out attackers regardless of their size or strength.

If you want to excel in trapping range, you need to develop tactile awareness. Tactile awareness is being able to read or feel your opponent's intentions through touch. This allows you to move ahead of their defense.

Tactile awareness give you the ability to control your opponent by dissolving, redirecting, or intercepting their energy. You can respond instantly and efficiently in a fight when you have the ability to feel and react to your opponent's energy.

Another important element of JKD is understanding energy.

Dan Inosanto teaches that there are roughly 20 different types of energy. Each energy is unique. When you train in different disciplines such as Wing Chun, Filipino Kali, Hung Gar, Penjak Silat, or Tai Chi, you develop your understanding of different types of energy.

To be good at JKD you should not only train and understand the concept of energy but also try to make it functional and combative. For example, two common drills used in JKD are Wing Chun's chi-sao drill and Kali's hubud/lubud drill.

Both drills teach a particular kind of energy. However they stress different principles. In the chi-sao drill, the concept is to engage the arms and roll. You are trying to maintain control over the center line. In Kali's hubud drill, they like to give the centerline.

Fighting in trapping range requires you to be very attuned to the slightest changes in your opponent's energy direction and force. You need to be in the moment and not overthink your responses. Your intuition, instinct and training will guide you in the fight.

Bruce Lee's personal art of trapping was highly effective. It involved disrupting and breaking down the opponent's structure. He would corrupt his opponents balance and timing. He was excellent at using his body's inner structure and mechanical advantages to trap and strike with maximum power and accuracy. 

Jeet Kune Do is not a martial arts style. It is a way of thinking about combat. It's about personalizing your approach to fighting. You fight based on your body type, attributes, and preferences. Trapping range is a key aspect of JKD that involves fighting in close quarters. Trapping techniques take out attackers quickly.

To excel in this range, you need to develop tactile awareness. You need to understand different types of energy. Bruce Lee was a great example of how effective JKD can be when used properly.