The SD4ALL Daily Letter

One Short Letter.
One Thing to Train.

A short, honest letter on what actually keeps you safe — what works, a story from the studio floor, and one thing to train today. Written by a Krav Maga instructor who's been teaching adults in Morris County, NJ for over a decade. Over 75 letters and counting.

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From recent letters

Word for word, as they landed in inboxes.

Daily Letter October 26, 2026

What do you notice in the coffee line?

I am reading a book called Check Engine Light, by Rob Wilson. It gave me two big words. Exteroception and interoception. The first one is simple. It is what is happening out there. What you see, hear and smell. Say someone is six feet away. Their hands are at their waistline. We have no idea what is there. It could be a knife. It could be a phone. They could be scratching their tummy. That is the reality. But when you have trained, you see more. …

The rest arrived by email.

Daily Letter October 27, 2026

What is your breath telling you right now?

Yesterday was about reading the outside. Today is the inside. It is simple to say. What am I feeling, right now? Start with your breath. Am I breathing through my mouth, or am I in control? On Sunday we trained choke defenses. One of the key things to find space is to be able to breathe. Under pressure, with someone holding the choke. Then your heart. Is it going too fast? Do I even notice it? …

The rest arrived by email.

Daily Letter October 28, 2026

How hard should your first class be?

Let me talk about pain. When someone says “I have pain”, it means something different for each person. Pain is also different from injury. So here is how we do it in the studio. Before we train, we agree the level of contact first. Say we are working a neck release, or getting out of the line. We start with a touch. Then we build, step by step. That is how we deal with the question every new person has. Will I get hurt? …

The rest arrived by email.

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