Minimalist involves running in light, flexible footwear with no cushion or a raised heel, to allow the foot to move naturally, restore strength and proprioception, and to improve foot strike.

Minimalist and Barefoot Running Are Better for Your Knees
Minimalist running shoes and running barefoot delivers a natural stimulus for enhanced neuromuscular and reflexive responses in the knee-joint that result in a faster acquisition of more functional mechanics that are not only safer on the knees, but reduces energy costs!