"Krav Maga heightens perception and transforms fear into something more productive."
Imi Lichtenfeld, founder of Krav Maga
Firstly, Krav Maga encourages avoiding confrontation in the first place. If you can run away from a threat, then do so!
If this is impossible or unsafe, then Krav Maga promotes finishing a fight as quickly and efficiently as possible. Counter attacks are aimed at the most vulnerable parts of the body, which enables the physically smaller or weaker defender to beat off a much stronger attacker.
Competition rules for martial arts naturally prohibits attacking the vulnerable areas like the groin, eyes and throat. Krav Maga, however, is about self defence, survival and escape, so within the bounds of UK self defence law (“necessary and proportionate”), counter attack techniques may even permanently injure or cause death to the attacker.