It has been shown in studies (Vico et al, 2014; Alghadir et al, 2015) that tongue posture contributes significantly to postural stability and potential muscular strength. Why is this? It’s because the tongue is part of a myofascial chain called the Deep Front Line.
“Toning up the core” is a common concept within practices in the Health & Fitness community. Hundreds of sit-ups, planks for minutes, and extension-driven ab wheel rollouts are a few examples of exercises personal trainers or online resources will likely prescribe to you for a “good core workout”.