Swing phase consists of the rest of the gait cycle, the time between the toe leaving the ground to the next heel strike.

This can either occur by releasing the elastic load from an earlier mid/forefoot strike or concentrically contracting from a heel strike.

This ratio allows for more natural running experience in which footfalls are in the mid to forefoot area instead of the unfavorable heel strike.

Barefoot running rarely features heel strike because the impact can be painful, the human heel pad not absorbing much of the force of impact.

Walking barefoot enables a more natural gait, eliminating the hard heel strike and instead, allowing for a rocking motion of the foot from heel to toe.