How do you streach arms in sonic unleashed?

In "Sonic Unleashed," you can stretch Sonic's arms during the daytime stages by using the "Boost" ability. While running, press the boost button (typically the B or Circle button, depending on your platform) to gain speed and perform a homing attack on enemies, allowing Sonic to extend his reach. Additionally, certain moves in the game may require timing and precision to effectively stretch his arms to grab onto ledges or interact with objects.