Application Time of Each External Force
Decreasing the application time of each external force that is slowing the body down is a major mechanism for reducing the magnitude of the internal forces the body must absorb.
The application time of the friction force starts when the wheels start to roll forward. It ends when the wheels stop rolling forward. Thus, there is no way to reduce the application time of the friction force.
Similarly, the application time of the vertical ground cannot be reduced. As long as the wheels are on the ground, the ground reaction force will be applied to the wheels.
For the drag force, there is also nothing that can be done to reduce the application time. If the bicycle is moving, a drag force will oppose the motion and slow the body down.