How Do I Make My Aluminum Bike Less Stiff?

How Do I Make My Aluminum Bike Less Stiff? In terms of lateral stiffness, each time your foot stomps on the pedal you create substantial lateral (side-to-side) stresses along with torsional (twisting) forces, which combine to lever the lower portion of the frame out of alignment. Are Aluminium frames stiff? The main disadvantage of aluminum