Like all Flashes, Wally is surrounded by a protective aura that allows him to resist the heat created by the pressure of compressed air caused by moving at super speed as well as other environmental consequences of moving at such velocities. It is not known how Wally is able to circumvent the damage moving at such great speeds would normally have on the environment, but it has been hypothesized that his protective aura allows him to "side step" such environmental consequences. Because of his powers and connection to the Speed Force, he can run at varying speeds for extended periods of time without needing rest or causing damage to his body. It is his connection to the Speed Force that constantly rejuvenates him while running, making it so he does not literally feed upon his own body to generate the energy for super speed. Even so, he has a sped up metabolism and finds it necessary to eat often and in great quantities to help supply the chemical energy needed.