Conservation of momentum

p = M1V1 = M2V2

I wanna explain why my walk to hands is the slowest

To lift a average 45kg gal up to hands needs certain x=M2V2 momentum.

Other people are lighter than me hence M1 < M(rara)

Since weight of flyer remain fairly constent among all the flyers,

V(rara) < V1 of others

Simple physics.