What is a common problem when performing a forward roll?

When performing a forward roll, losing the curl is a common problem that can impact the effectiveness and safety of the roll. The "curl" refers to the technique where the body is tucked into a tight ball, aiding in the roll's smooth execution. This posture helps protect the head and neck while ensuring the body rotates efficiently. If a student fails to maintain this tuck, they may expose their head or risk rolling incorrectly, which can lead to injury or an incomplete roll. A proper curl position helps maintain control throughout the motion and contributes to a successful forward roll.

The other options reference different challenges that can occur but do not directly impact the foundational technique of execution as significantly as losing the curl. For instance, losing balance is a possible issue during various movements but is more associated with overall body control than this specific action. Similarly, overextending legs may occur during the roll but does not fundamentally compromise the technique as much as failing to hold the curl does. Falling backward is not typically associated with a forward roll, as it indicates an error in the direction of the movement itself rather than the technique utilized during the roll.