The Science Behind Women's Self-Defense

Part 1 — The Problem

The most common attacks on women

According to the NIJ/CDC Full Report on Violence Against Women, attacks follow a clear, predictable hierarchy. We train for what actually happens — not Hollywood scenarios.

1 in 4

Women experience physical violence in their lifetime

1 in 5

Women experience rape or attempted rape

41%

Experience physical violence or stalking by an intimate partner

8 most common physical attacks on women — ranked

Percentage of women reporting that assault type since age 18. Source: NIJ/CDC Full Report, Exhibit 23 (n=8,000).

1 Pushing, grabbing, shoving 23.3%The most common physical attack — and the most under-trained scenario in standard self-defense programs.
2 Slapping / hitting (open or closed fist) 21.1%
3 Hair pulling 11.4%
4 Beating up (repeated strikes) 10.7%
5 Throwing an object 10.3%
6 Being hit with an object 7.4%
7 Kicking or biting 6.9%
8 Choking or strangulation 6.8%Can cause loss of consciousness in under 10 seconds — needs a trained reflex, not an improvised reaction. 2.3× more likely for women than men.

Women vs. men — full comparison (Exhibit 23)

Both columns; n=8,000 per group. The standout: women are choked at 2.3× the rate of men.

Type of assault	Women	Men	Difference
Pushed, grabbed, shoved	23.3%	32.9%	Men +9.6pp
Slapped, hit	21.1%	28.2%	Men +7.1pp
Pulled hair	11.4%	8.7%	Women +2.7pp
Beat up	10.7%	10.9%	≈ Equal
Threw something	10.3%	17.8%	Men +7.5pp
Hit with an object	7.4%	15.9%	Men +8.5pp
Kicked, bit	6.9%	12.7%	Men +5.8pp
Choked, tried to drown	6.8%	3.0%	Women 2.3× higher
Threatened with a gun	5.5%	12.7%	Men +7.2pp
Threatened with a knife	4.8%	15.1%	Men +10.3pp
Used a knife	2.7%	8.9%	Men +6.2pp
Used a gun	2.3%	4.9%	Men +2.6pp

All gender differences are statistically significant (χ², p ≤ .001) except "beat up." Total reporting any physical assault since age 18: women 30.6%, men 44.9%. Training implication: the top two attack types are the same for both sexes — but for women, the perpetrator is known ~90% of the time, and choking demands a trained reflex.

Who attacks women — and where

90%

of attackers are someone the woman already knows

60%

of attacks occur in familiar places — home, work, near home

~3%

happen in parking garages — despite being the most-feared scenario

"If you're training to fight off a stranger in a parking garage, you're preparing for the wrong scenario 90% of the time. Most violence against women involves someone known, in a familiar place, often after psychological pressure — not a sudden ambush." — Gonçalo Esteves, SD4ALL

The Red Zone — when attacks spike

The "Red Zone" is the period from late August through November when over half of campus sexual assaults occur. Knowing when and how attacks happen is the first layer of defense.

50%+

of college sexual assaults occur Aug–Nov

2.5×

more likely — freshmen vs. upperclassmen

629

assaults among first-year students in Sept–Oct 2014 alone (DOJ, 9 colleges)

Part 2 — The Solution

The SD4ALL evidence-based training framework

Effective women's self-defense needs four sequential phases — not a one-hour workshop or a single technique. This is the framework we build from, informed by the research above.

Phase 1

Safe Entry

Build confidence and consistency. Psychological safety, clear boundaries, trauma-aware coaching.

Phase 2

Controlled Exposure

Realistic calibration. Instructor-selected partners, progressive resistance, opt-out available at all times.

Phase 3

Ecological Training

Real-world scenarios: grabs, chokes, ground situations, environmental constraints. Not pre-arranged sequences.

Phase 4

Pressure Testing

Performance under stress: timed scenarios, controlled fatigue, decision-making under real pressure.

What to ask before enrolling in any self-defense program

Progressive resistance — do you train against increasing resistance, not just cooperative partners?
Realistic partners — do you practice with controlled partners that reflect real risk profiles?
Common threat patterns — does training include grabs, chokes, clinch pressure, and ground survival?
Decision framework — is there clear guidance on escape, de-escalation, and when to resist?
Safe culture — does the environment feel psychologically safe while staying honest about reality?

Women, strength training & longevity

The physical training here does more than build self-defense capability. Resistance and weight-bearing exercise are among the single most evidence-backed interventions for bone density, longevity, and quality of life in women — especially post-menopause.

80%

of osteoporosis cases are women — largely preventable through resistance training

80%

of longevity is lifestyle, not genetics (Danish Twin Study)

Power 9

Blue Zones' shared habits — movement, purpose, community — are all present at SD4ALL

Why this research matters to me personally

I'm not a researcher — I'm a practitioner. But after nearly 30 years of teaching Krav Maga, I learned that you can't teach effectively what you haven't understood honestly.

The data on who attacks women — 90% someone she knows — means a real part of every class focuses on boundary-setting, psychological pressure, and familiar-context scenarios, not parking-lot ambushes. The data on attack types — pushing/grabbing #1, choking #8 but 2.3× more likely for a woman and catastrophic when it happens — means we drill those until they're reflex, not techniques you have to think about.

And I'll tell you honestly what I don't know: I don't have controlled studies proving my specific approach outperforms others. What I have is nearly 30 years of watching what breaks down under real pressure — in Portugal, Norway, the UK, and the US — and iterating from that. More about my background →