What is an important aspect of performing the "hundred" exercise correctly?

The important aspect of performing the "hundred" exercise correctly is keeping the neck relaxed. This is crucial because tension in the neck can lead to discomfort and strain during the exercise. Maintaining a relaxed neck allows for better alignment of the spine and enables focused engagement of the core muscles. The "hundred" is designed to promote core strength and stability while also incorporating breath control, so a relaxed neck facilitates proper breathing mechanics.

While deep inhalation is beneficial for breath control and engagement, it should not come at the expense of neck tension or strain. Additionally, using a fast pace may compromise form and focus on the targeted muscle groups, negating the effectiveness of the exercise. Lastly, there are variations of the "hundred" where the knees can be either bent or straight; this variation is often respectful of individual fitness levels and goals, so it is not a definitive factor in performing the exercise correctly. Keeping the neck relaxed is foundational to ensuring safety and effectiveness throughout the movement.